From patchwork Wed Aug 16 16:02:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13355459 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id AFA2EC001E0 for ; Wed, 16 Aug 2023 16:06:04 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id A7C5282A; Wed, 16 Aug 2023 18:05:12 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz A7C5282A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692201962; bh=FQe9VLDfVdRSl9wI/EZDxiX7gRbBjQeUFFFVYdsmsG8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=S8UWj8GFAV70YKZr+z/SavpOeY+6mWHvqB4+yxmMZVzIbW5OPIqxwY1FGvrZFzozl P+4TGMAFLVGfFyZrRMKiirtQUK6zcZ3x4ao44Nrbq/C+JtYFkMy45QdgaQEMj4UQMo QIHlzHs6xyKFID99Rc2SQvZmUTxLqJWpHJCU1yDo= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 40CDAF805C0; Wed, 16 Aug 2023 18:03:26 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 557E2F805B5; Wed, 16 Aug 2023 18:03:25 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id C5746F80587; Wed, 16 Aug 2023 18:03:20 +0200 (CEST) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 8ABE5F80290 for ; Wed, 16 Aug 2023 18:02:55 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 8ABE5F80290 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=EnfwTQz1; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=2E4UPoww Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 40DCC21866; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jib2xBRuDTapc67JM726oqyZiTwBwsXtCor6hQ+MqhE=; b=EnfwTQz1+PUlZ3V0T+3tGAbY8k8LGhOtlxaamlfWqoXn4g6leQGMmd4r1Kl5u+lyaR0N5w Gx+ClHtXVE3ShNzy0lEEo7KBiT4/acTxszGA9VhcQvDgZxBq+iCtOtKKfbc0Xks7CJiVLB RE39Yu75Tj/QswZ/miU1FmGTsZjE6IQ= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jib2xBRuDTapc67JM726oqyZiTwBwsXtCor6hQ+MqhE=; b=2E4UPowwzXWgxV/WL2U/+WGkvxypVEP//E3ZiwWBGLPxuwb4JR0/kk2ea6/FXyHteCP4Zu NMpF4a8Hjq2VrKAQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 1EBBD139F8; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id WCuABi/z3GSNKQAAMHmgww (envelope-from ); Wed, 16 Aug 2023 16:02:55 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Curtis Malainey Subject: [PATCH RFC 1/9] ALSA: core: Introduce snd_device_alloc() Date: Wed, 16 Aug 2023 18:02:44 +0200 Message-Id: <20230816160252.23396-2-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230816160252.23396-1-tiwai@suse.de> References: <20230816160252.23396-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: Y4FI23PP7IHQSMU5BJVNIW5ISTTPSFUR X-Message-ID-Hash: Y4FI23PP7IHQSMU5BJVNIW5ISTTPSFUR X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Introduce a new helper, snd_device_alloc(), for allocating a struct device that is bound with the sound class. It's a replacement of snd_device_initialize(). Signed-off-by: Takashi Iwai --- include/sound/core.h | 1 + sound/core/init.c | 31 +++++++++++++++++++++++++++++++ 2 files changed, 32 insertions(+) diff --git a/include/sound/core.h b/include/sound/core.h index f6e0dd648b80..f986fcc5f18f 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -239,6 +239,7 @@ extern struct dentry *sound_debugfs_root; void snd_request_card(int card); +int snd_device_alloc(struct device **dev_p, struct snd_card *card); void snd_device_initialize(struct device *dev, struct snd_card *card); int snd_register_device(int type, struct snd_card *card, int dev, diff --git a/sound/core/init.c b/sound/core/init.c index baef2688d0cf..a4de9f00d90f 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -134,6 +134,37 @@ void snd_device_initialize(struct device *dev, struct snd_card *card) } EXPORT_SYMBOL_GPL(snd_device_initialize); +/* the default release callback set in snd_device_alloc() */ +static void default_release_alloc(struct device *dev) +{ + kfree(dev); +} + +/** + * snd_device_alloc - Allocate and initialize struct device for sound devices + * @dev_p: pointer to store the allocated device + * @card: card to assign, optional + * + * For releasing the allocated device, call put_device(). + */ +int snd_device_alloc(struct device **dev_p, struct snd_card *card) +{ + struct device *dev; + + *dev_p = NULL; + dev = kzalloc(sizeof(*dev), GFP_KERNEL); + if (!dev) + return -ENOMEM; + device_initialize(dev); + if (card) + dev->parent = &card->card_dev; + dev->class = &sound_class; + dev->release = default_release_alloc; + *dev_p = dev; + return 0; +} +EXPORT_SYMBOL_GPL(snd_device_alloc); + static int snd_card_init(struct snd_card *card, struct device *parent, int idx, const char *xid, struct module *module, size_t extra_size); From patchwork Wed Aug 16 16:02:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13355454 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 98716C001E0 for ; Wed, 16 Aug 2023 16:04:21 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 74F64827; Wed, 16 Aug 2023 18:03:29 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 74F64827 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692201859; bh=phT/Z1n5QJx4DPCoY+oX8Fj7hPpA6tzgNSIdh2jKP+4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=LWVBlxiG2q+SqcZqx2b18n/TEUhBhdMSZf6zsAKWd8z38mweDBkeCANlW0RbLXEeF u/0jsxqeZ7+0nnjpZ5s4z17VH0Nfmb3+HS5L1ZMYwu7lsWV1LxxHrHx00sw0IQkPpi w8JTQD2oqHWo0Xeg9rqsfGfbrzvvp6KozYavvJxU= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 872ADF80553; Wed, 16 Aug 2023 18:03:08 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id B4C36F80510; Wed, 16 Aug 2023 18:03:07 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 114BDF80551; Wed, 16 Aug 2023 18:03:04 +0200 (CEST) Received: from smtp-out2.suse.de (smtp-out2.suse.de [IPv6:2001:67c:2178:6::1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id CBB68F80074 for ; Wed, 16 Aug 2023 18:02:55 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz CBB68F80074 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=L5C6XzFd; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=Uc++qM6S Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 618CD1F74A; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=a0W1/5bP7xDvKRYzs9yjyIX8JnhqCK16JlRRetS5RYY=; b=L5C6XzFdAucuOtoS4K2+JqTAoWfowlPVq6bmx0lDUZPuTqFPVyP8KJ6kriRfQpv218uXsV WQTzt09pb36tK+I1Y8vTmrHcvt2Veq0dz1hSF5SYvcCk8PTfd7dB8/ZqQ3hq1xQ4klShZQ +OQAbikcHj39vuhiozXMXq9rh7YQvfU= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=a0W1/5bP7xDvKRYzs9yjyIX8JnhqCK16JlRRetS5RYY=; b=Uc++qM6S1siTFULF/99EIlfwNod7g3sTMkp4RXr1o0ctau2WqBpPfQNSeJQy4A2bd0BZYF DdP7DyjQ7DrksfCw== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 43B45133F2; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id GMGUDy/z3GSNKQAAMHmgww (envelope-from ); Wed, 16 Aug 2023 16:02:55 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Curtis Malainey Subject: [PATCH RFC 2/9] ALSA: control: Don't embed ctl_dev Date: Wed, 16 Aug 2023 18:02:45 +0200 Message-Id: <20230816160252.23396-3-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230816160252.23396-1-tiwai@suse.de> References: <20230816160252.23396-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: DI2SWF4C3TLIA77AKPX3AW6MCQ3SIDKL X-Message-ID-Hash: DI2SWF4C3TLIA77AKPX3AW6MCQ3SIDKL X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Embedding the ctl_dev in the snd_card object may result in UAF when the delayed kobj release is used; at the delayed kobj release, it still accesses the struct device itself while the card memory (that embeds the struct device) may be already gone. As a workaround, detach the struct device from the card object by allocating via the new snd_device_alloc() helper. The rest are just replacing ctl_dev access to the pointer. This is based on the fix Curtis posted initially. In this patch, the changes are split and use the new helper function instead. Link: https://lore.kernel.org/r/20230801171928.1460120-1-cujomalainey@chromium.org Signed-off-by: Takashi Iwai --- include/sound/core.h | 2 +- sound/core/control.c | 14 ++++++++------ sound/core/control_led.c | 4 ++-- sound/usb/media.c | 2 +- 4 files changed, 12 insertions(+), 10 deletions(-) diff --git a/include/sound/core.h b/include/sound/core.h index f986fcc5f18f..f3f6b720a278 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -96,7 +96,7 @@ struct snd_card { private data */ struct list_head devices; /* devices */ - struct device ctl_dev; /* control device */ + struct device *ctl_dev; /* control device */ unsigned int last_numid; /* last used numeric ID */ struct rw_semaphore controls_rwsem; /* controls lock (list and values) */ rwlock_t ctl_files_rwlock; /* ctl_files list lock */ diff --git a/sound/core/control.c b/sound/core/control.c index 8386b53acdcd..eb975df067fb 100644 --- a/sound/core/control.c +++ b/sound/core/control.c @@ -2315,7 +2315,7 @@ static int snd_ctl_dev_register(struct snd_device *device) int err; err = snd_register_device(SNDRV_DEVICE_TYPE_CONTROL, card, -1, - &snd_ctl_f_ops, card, &card->ctl_dev); + &snd_ctl_f_ops, card, card->ctl_dev); if (err < 0) return err; down_read(&card->controls_rwsem); @@ -2351,7 +2351,7 @@ static int snd_ctl_dev_disconnect(struct snd_device *device) up_read(&snd_ctl_layer_rwsem); up_read(&card->controls_rwsem); - return snd_unregister_device(&card->ctl_dev); + return snd_unregister_device(card->ctl_dev); } /* @@ -2373,7 +2373,7 @@ static int snd_ctl_dev_free(struct snd_device *device) xa_destroy(&card->ctl_hash); #endif up_write(&card->controls_rwsem); - put_device(&card->ctl_dev); + put_device(card->ctl_dev); return 0; } @@ -2395,12 +2395,14 @@ int snd_ctl_create(struct snd_card *card) if (snd_BUG_ON(card->number < 0 || card->number >= SNDRV_CARDS)) return -ENXIO; - snd_device_initialize(&card->ctl_dev, card); - dev_set_name(&card->ctl_dev, "controlC%d", card->number); + err = snd_device_alloc(&card->ctl_dev, card); + if (err < 0) + return err; + dev_set_name(card->ctl_dev, "controlC%d", card->number); err = snd_device_new(card, SNDRV_DEV_CONTROL, card, &ops); if (err < 0) - put_device(&card->ctl_dev); + put_device(card->ctl_dev); return err; } diff --git a/sound/core/control_led.c b/sound/core/control_led.c index ee77547bf8dc..760e46cf25cc 100644 --- a/sound/core/control_led.c +++ b/sound/core/control_led.c @@ -688,7 +688,7 @@ static void snd_ctl_led_sysfs_add(struct snd_card *card) goto cerr; led->cards[card->number] = led_card; snprintf(link_name, sizeof(link_name), "led-%s", led->name); - WARN(sysfs_create_link(&card->ctl_dev.kobj, &led_card->dev.kobj, link_name), + WARN(sysfs_create_link(&card->ctl_dev->kobj, &led_card->dev.kobj, link_name), "can't create symlink to controlC%i device\n", card->number); WARN(sysfs_create_link(&led_card->dev.kobj, &card->card_dev.kobj, "card"), "can't create symlink to card%i\n", card->number); @@ -714,7 +714,7 @@ static void snd_ctl_led_sysfs_remove(struct snd_card *card) if (!led_card) continue; snprintf(link_name, sizeof(link_name), "led-%s", led->name); - sysfs_remove_link(&card->ctl_dev.kobj, link_name); + sysfs_remove_link(&card->ctl_dev->kobj, link_name); sysfs_remove_link(&led_card->dev.kobj, "card"); device_unregister(&led_card->dev); led->cards[card->number] = NULL; diff --git a/sound/usb/media.c b/sound/usb/media.c index 840f42cb9272..6d11fedb4632 100644 --- a/sound/usb/media.c +++ b/sound/usb/media.c @@ -163,7 +163,7 @@ void snd_media_stop_pipeline(struct snd_usb_substream *subs) static int snd_media_mixer_init(struct snd_usb_audio *chip) { - struct device *ctl_dev = &chip->card->ctl_dev; + struct device *ctl_dev = chip->card->ctl_dev; struct media_intf_devnode *ctl_intf; struct usb_mixer_interface *mixer; struct media_device *mdev = chip->media_dev; From patchwork Wed Aug 16 16:02:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13355456 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D0AEEC04A6A for ; Wed, 16 Aug 2023 16:05:12 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 27FD2847; Wed, 16 Aug 2023 18:04:20 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 27FD2847 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692201910; bh=2oY2EvGNFVfMvXBPDNEOnCx7UcXe6sbmA3Oi188+3Lg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=uZJcNFqhNWWNve+Nyz+Ke+typXQIFB2snHMhvI1+Rps9nrf6Iwcr+7Ld/FP0bqdGH 1anPeQW0y1gxeygdF4It6lW4clHelptoUF8R1HybGhQ26IjuyPEaLSVaIO59wxwKST Jpk3xMZhELr7FDrHkMLv31qHGlQU7zeP7LbQQU3A= Received: by alsa1.perex.cz (Postfix, from userid 50401) id A8473F8025F; Wed, 16 Aug 2023 18:03:18 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id C034FF80567; Wed, 16 Aug 2023 18:03:17 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 16812F80571; Wed, 16 Aug 2023 18:03:13 +0200 (CEST) Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 0EFC9F8016A for ; Wed, 16 Aug 2023 18:02:55 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 0EFC9F8016A Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=JvklwM1i; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=zuzSA1/l Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 8B5AA21889; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qfyJ5Is//7uc8Mi6ii436xNwcPaQvKwSGrJ1SCUxrAE=; b=JvklwM1iK0YoaZQsXrKeuwriKBbb1JLQgFR9uDkJ0PzF3VNnafIqK+DlDl//o7yWZ30iKV 6H6kkc55Y9rxIaPdtFMGWqKBE1z7JMPaynBwaqMDrojMSe7RFUVLBk885xUX9sLE2Bv0h8 79xMFDVIdN9wMrqFUeNEEgLr2y1A4sU= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qfyJ5Is//7uc8Mi6ii436xNwcPaQvKwSGrJ1SCUxrAE=; b=zuzSA1/l+zkTL+wzufxg77rVQCF8ehjj7NrYMWIS71aBlh6ipBm8jbNZg3k9pcNa0709Y6 WiZcwP4nX5Jo7mDg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 65A17139F8; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id IA3jFy/z3GSNKQAAMHmgww (envelope-from ); Wed, 16 Aug 2023 16:02:55 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Curtis Malainey Subject: [PATCH RFC 3/9] ALSA: pcm: Don't embed device Date: Wed, 16 Aug 2023 18:02:46 +0200 Message-Id: <20230816160252.23396-4-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230816160252.23396-1-tiwai@suse.de> References: <20230816160252.23396-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: ML6ZH23D3PXRODMFNT7BPAC23FNVVHRJ X-Message-ID-Hash: ML6ZH23D3PXRODMFNT7BPAC23FNVVHRJ X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: So far we use the embedded struct device for each PCM substreams in struct snd_pcm. This may result in UAF when the delayed kobj release is used; each corresponding struct device is still accessed at the (delayed) device release, while the snd_pcm object may be already gone. As a workaround, detach the struct device from the snd_pcm object by allocating via the new snd_device_alloc() helper. A caveat is that we store the PCM substream pointer to drvdata since the device resume and others require the access to it. This patch is based on the fix Curtis posted initially. In this patch, the changes are split and use the new helper function instead. Link: https://lore.kernel.org/r/20230801171928.1460120-1-cujomalainey@chromium.org Signed-off-by: Takashi Iwai --- include/sound/pcm.h | 2 +- sound/aoa/soundbus/i2sbus/pcm.c | 4 ++-- sound/core/pcm.c | 22 +++++++++++++--------- sound/usb/media.c | 2 +- 4 files changed, 17 insertions(+), 13 deletions(-) diff --git a/include/sound/pcm.h b/include/sound/pcm.h index 19f564606ac4..0243a13e9ac4 100644 --- a/include/sound/pcm.h +++ b/include/sound/pcm.h @@ -510,7 +510,7 @@ struct snd_pcm_str { #endif #endif struct snd_kcontrol *chmap_kctl; /* channel-mapping controls */ - struct device dev; + struct device *dev; }; struct snd_pcm { diff --git a/sound/aoa/soundbus/i2sbus/pcm.c b/sound/aoa/soundbus/i2sbus/pcm.c index a9e502a6cdeb..3680eb6eabc9 100644 --- a/sound/aoa/soundbus/i2sbus/pcm.c +++ b/sound/aoa/soundbus/i2sbus/pcm.c @@ -972,7 +972,7 @@ i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card, goto out_put_ci_module; snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_PLAYBACK, &i2sbus_playback_ops); - dev->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].dev.parent = + dev->pcm->streams[SNDRV_PCM_STREAM_PLAYBACK]->dev.parent = &dev->ofdev.dev; i2sdev->out.created = 1; } @@ -989,7 +989,7 @@ i2sbus_attach_codec(struct soundbus_dev *dev, struct snd_card *card, goto out_put_ci_module; snd_pcm_set_ops(dev->pcm, SNDRV_PCM_STREAM_CAPTURE, &i2sbus_record_ops); - dev->pcm->streams[SNDRV_PCM_STREAM_CAPTURE].dev.parent = + dev->pcm->streams[SNDRV_PCM_STREAM_CAPTURE]->dev.parent = &dev->ofdev.dev; i2sdev->in.created = 1; } diff --git a/sound/core/pcm.c b/sound/core/pcm.c index 9d95e3731123..317a25b68159 100644 --- a/sound/core/pcm.c +++ b/sound/core/pcm.c @@ -604,7 +604,7 @@ static const struct attribute_group *pcm_dev_attr_groups[]; #ifdef CONFIG_PM_SLEEP static int do_pcm_suspend(struct device *dev) { - struct snd_pcm_str *pstr = container_of(dev, struct snd_pcm_str, dev); + struct snd_pcm_str *pstr = dev_get_drvdata(dev); if (!pstr->pcm->no_device_suspend) snd_pcm_suspend_all(pstr->pcm); @@ -650,11 +650,14 @@ int snd_pcm_new_stream(struct snd_pcm *pcm, int stream, int substream_count) if (!substream_count) return 0; - snd_device_initialize(&pstr->dev, pcm->card); - pstr->dev.groups = pcm_dev_attr_groups; - pstr->dev.type = &pcm_dev_type; - dev_set_name(&pstr->dev, "pcmC%iD%i%c", pcm->card->number, pcm->device, + err = snd_device_alloc(&pstr->dev, pcm->card); + if (err < 0) + return err; + dev_set_name(pstr->dev, "pcmC%iD%i%c", pcm->card->number, pcm->device, stream == SNDRV_PCM_STREAM_PLAYBACK ? 'p' : 'c'); + pstr->dev->groups = pcm_dev_attr_groups; + pstr->dev->type = &pcm_dev_type; + dev_set_drvdata(pstr->dev, pstr); if (!pcm->internal) { err = snd_pcm_stream_proc_init(pstr); @@ -847,7 +850,7 @@ static void snd_pcm_free_stream(struct snd_pcm_str * pstr) #endif free_chmap(pstr); if (pstr->substream_count) - put_device(&pstr->dev); + put_device(pstr->dev); } #if IS_ENABLED(CONFIG_SND_PCM_OSS) @@ -1017,7 +1020,7 @@ void snd_pcm_detach_substream(struct snd_pcm_substream *substream) static ssize_t pcm_class_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct snd_pcm_str *pstr = container_of(dev, struct snd_pcm_str, dev); + struct snd_pcm_str *pstr = dev_get_drvdata(dev); struct snd_pcm *pcm = pstr->pcm; const char *str; static const char *strs[SNDRV_PCM_CLASS_LAST + 1] = { @@ -1078,7 +1081,7 @@ static int snd_pcm_dev_register(struct snd_device *device) /* register pcm */ err = snd_register_device(devtype, pcm->card, pcm->device, &snd_pcm_f_ops[cidx], pcm, - &pcm->streams[cidx].dev); + pcm->streams[cidx].dev); if (err < 0) { list_del_init(&pcm->list); goto unlock; @@ -1125,7 +1128,8 @@ static int snd_pcm_dev_disconnect(struct snd_device *device) pcm_call_notify(pcm, n_disconnect); for (cidx = 0; cidx < 2; cidx++) { - snd_unregister_device(&pcm->streams[cidx].dev); + if (pcm->streams[cidx].dev) + snd_unregister_device(pcm->streams[cidx].dev); free_chmap(&pcm->streams[cidx]); } mutex_unlock(&pcm->open_mutex); diff --git a/sound/usb/media.c b/sound/usb/media.c index 6d11fedb4632..d48db6f3ae65 100644 --- a/sound/usb/media.c +++ b/sound/usb/media.c @@ -35,7 +35,7 @@ int snd_media_stream_init(struct snd_usb_substream *subs, struct snd_pcm *pcm, { struct media_device *mdev; struct media_ctl *mctl; - struct device *pcm_dev = &pcm->streams[stream].dev; + struct device *pcm_dev = pcm->streams[stream].dev; u32 intf_type; int ret = 0; u16 mixer_pad; From patchwork Wed Aug 16 16:02:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13355455 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 040C2C001E0 for ; Wed, 16 Aug 2023 16:04:50 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 0AB1E828; Wed, 16 Aug 2023 18:03:59 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 0AB1E828 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692201889; bh=KIzidWZOWWg0oICJwd0Nqp/docUSis/K/1sEdFm4ypA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=doFIdJZAMyMrqNQFW8/FerOiA/V2EtagHHhM+ZVR4HQzAdLrHw05LDbvI3D/hbQlJ EIFnoPx5EU8FViiFgQWRrjd/q52JfajJTTzATZcUuX0W0+zneq46VVt2ICIZNyZlRY ErPpMq3pNNSSPVJA1zmAUCOmfmHfuMvCcUNYFsnc= Received: by alsa1.perex.cz (Postfix, from userid 50401) id AF880F80568; Wed, 16 Aug 2023 18:03:10 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 331D4F80563; Wed, 16 Aug 2023 18:03:10 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 69517F80551; Wed, 16 Aug 2023 18:03:07 +0200 (CEST) Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 28608F800EE for ; Wed, 16 Aug 2023 18:02:55 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 28608F800EE Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=z+SqeBwk; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=t6gtf0z9 Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id AF6621F85D; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=09GtIE4nldCqlVqLMDoa3/hcoV1GSd+mdT8pNG5Mxu4=; b=z+SqeBwkG3zCGP4kUTZtHxwYDsRszv0kA4wNvCy74TmMDqgvZGoIPTmzYhvyqCgym1A8TZ krOKgicA4ePn0hZIfkc6JQvQJWghuYGa55BVfdJxz+vWRgSWxtKJZPIVLjxU/r86DtQxIl fv5ZPzY4SGbaI6+FIntquaYeVy9+3M4= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=09GtIE4nldCqlVqLMDoa3/hcoV1GSd+mdT8pNG5Mxu4=; b=t6gtf0z9mmD4/gd8XlWfYSm7puEcWYVdxh0Gy5vy8DavWW96muOYSj1NjTdgbYrpk7StPS HLuZwdL2CBuFBOBQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 8DFE5133F2; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id iMnmIS/z3GSNKQAAMHmgww (envelope-from ); Wed, 16 Aug 2023 16:02:55 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Curtis Malainey Subject: [PATCH RFC 4/9] ALSA: hwdep: Don't embed device Date: Wed, 16 Aug 2023 18:02:47 +0200 Message-Id: <20230816160252.23396-5-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230816160252.23396-1-tiwai@suse.de> References: <20230816160252.23396-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: JLILG2MKAKEOR3BN4A4JXQUD4CIBQ67P X-Message-ID-Hash: JLILG2MKAKEOR3BN4A4JXQUD4CIBQ67P X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Like control and PCM devices, it's better to avoid the embedded struct device for hwdep (although it's more or less well working), too. Change it to allocate via snd_device_alloc(), and free the memory at the common snd_hwdep_free(). Signed-off-by: Takashi Iwai --- include/sound/hwdep.h | 2 +- sound/core/hwdep.c | 38 +++++++++++++++++++++----------------- sound/pci/hda/hda_hwdep.c | 4 ++-- 3 files changed, 24 insertions(+), 20 deletions(-) diff --git a/include/sound/hwdep.h b/include/sound/hwdep.h index 8d6cdb254039..b0da633184cd 100644 --- a/include/sound/hwdep.h +++ b/include/sound/hwdep.h @@ -53,7 +53,7 @@ struct snd_hwdep { wait_queue_head_t open_wait; void *private_data; void (*private_free) (struct snd_hwdep *hwdep); - struct device dev; + struct device *dev; struct mutex open_mutex; int used; /* reference counter */ diff --git a/sound/core/hwdep.c b/sound/core/hwdep.c index e95fa275c289..de7476034f2c 100644 --- a/sound/core/hwdep.c +++ b/sound/core/hwdep.c @@ -338,9 +338,14 @@ static const struct file_operations snd_hwdep_f_ops = .mmap = snd_hwdep_mmap, }; -static void release_hwdep_device(struct device *dev) +static void snd_hwdep_free(struct snd_hwdep *hwdep) { - kfree(container_of(dev, struct snd_hwdep, dev)); + if (!hwdep) + return; + if (hwdep->private_free) + hwdep->private_free(hwdep); + put_device(hwdep->dev); + kfree(hwdep); } /** @@ -382,16 +387,20 @@ int snd_hwdep_new(struct snd_card *card, char *id, int device, if (id) strscpy(hwdep->id, id, sizeof(hwdep->id)); - snd_device_initialize(&hwdep->dev, card); - hwdep->dev.release = release_hwdep_device; - dev_set_name(&hwdep->dev, "hwC%iD%i", card->number, device); + err = snd_device_alloc(&hwdep->dev, card); + if (err < 0) { + snd_hwdep_free(hwdep); + return err; + } + + dev_set_name(hwdep->dev, "hwC%iD%i", card->number, device); #ifdef CONFIG_SND_OSSEMUL hwdep->oss_type = -1; #endif err = snd_device_new(card, SNDRV_DEV_HWDEP, hwdep, &ops); if (err < 0) { - put_device(&hwdep->dev); + snd_hwdep_free(hwdep); return err; } @@ -403,12 +412,7 @@ EXPORT_SYMBOL(snd_hwdep_new); static int snd_hwdep_dev_free(struct snd_device *device) { - struct snd_hwdep *hwdep = device->device_data; - if (!hwdep) - return 0; - if (hwdep->private_free) - hwdep->private_free(hwdep); - put_device(&hwdep->dev); + snd_hwdep_free(device->device_data); return 0; } @@ -426,9 +430,9 @@ static int snd_hwdep_dev_register(struct snd_device *device) list_add_tail(&hwdep->list, &snd_hwdep_devices); err = snd_register_device(SNDRV_DEVICE_TYPE_HWDEP, hwdep->card, hwdep->device, - &snd_hwdep_f_ops, hwdep, &hwdep->dev); + &snd_hwdep_f_ops, hwdep, hwdep->dev); if (err < 0) { - dev_err(&hwdep->dev, "unable to register\n"); + dev_err(hwdep->dev, "unable to register\n"); list_del(&hwdep->list); mutex_unlock(®ister_mutex); return err; @@ -439,12 +443,12 @@ static int snd_hwdep_dev_register(struct snd_device *device) if (hwdep->oss_type >= 0) { if (hwdep->oss_type == SNDRV_OSS_DEVICE_TYPE_DMFM && hwdep->device) - dev_warn(&hwdep->dev, + dev_warn(hwdep->dev, "only hwdep device 0 can be registered as OSS direct FM device!\n"); else if (snd_register_oss_device(hwdep->oss_type, card, hwdep->device, &snd_hwdep_f_ops, hwdep) < 0) - dev_warn(&hwdep->dev, + dev_warn(hwdep->dev, "unable to register OSS compatibility device\n"); else hwdep->ossreg = 1; @@ -471,7 +475,7 @@ static int snd_hwdep_dev_disconnect(struct snd_device *device) if (hwdep->ossreg) snd_unregister_oss_device(hwdep->oss_type, hwdep->card, hwdep->device); #endif - snd_unregister_device(&hwdep->dev); + snd_unregister_device(hwdep->dev); list_del_init(&hwdep->list); mutex_unlock(&hwdep->open_mutex); mutex_unlock(®ister_mutex); diff --git a/sound/pci/hda/hda_hwdep.c b/sound/pci/hda/hda_hwdep.c index 125e97fe0b1c..727f39acedfc 100644 --- a/sound/pci/hda/hda_hwdep.c +++ b/sound/pci/hda/hda_hwdep.c @@ -114,8 +114,8 @@ int snd_hda_create_hwdep(struct hda_codec *codec) #endif /* for sysfs */ - hwdep->dev.groups = snd_hda_dev_attr_groups; - dev_set_drvdata(&hwdep->dev, codec); + hwdep->dev->groups = snd_hda_dev_attr_groups; + dev_set_drvdata(hwdep->dev, codec); return 0; } From patchwork Wed Aug 16 16:02:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13355457 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BBBDEC04A6A for ; Wed, 16 Aug 2023 16:05:18 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 00398850; Wed, 16 Aug 2023 18:04:26 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 00398850 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692201917; bh=IQ4qOf8uZ3JR8CpxsrEi6kzaQ6yDa1gco+58dFsqBQM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=YEVXkgyjvpJawFf63bHvw1Oj0T9zfJxOudgwa5bsOsW3Ww4vZ3+rj8glLDj9gQHGb bdSSXFXV9Hp7+cylfK0o5OzSXx3U7DyICYEQzvEd5MdIp1ckyQfpSh51ZwyL0xYE7L mD3Zsis125rzW0HJVT681PTuVoWpYPzyLZaXTpGI= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 4E572F80589; Wed, 16 Aug 2023 18:03:19 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 3EEC8F80580; Wed, 16 Aug 2023 18:03:19 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 5AB69F80567; Wed, 16 Aug 2023 18:03:15 +0200 (CEST) Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 4C3D7F80254 for ; Wed, 16 Aug 2023 18:02:56 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 4C3D7F80254 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=z9CsTj/g; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=CxtEU9ex Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id CC8E321890; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2uvkjQlv5XdKAnae/lzMDYSQYG/vfJd2EoK2s4BCYmA=; b=z9CsTj/gM3n3ysrVaqfTYN0RNuY4+rNJgT1+G1e2UjR9XsB/dRldTTUQzVOm5Hf3rjK39S 4nja0PR6DnNBI/XC9gWYOuQ6S33OA+N7HdJNDIdewMfAuA5QEhIwUB+391b1hVntMkzfAX koE0jBPG1nzF9E43eRjxx8NSIWMgXE8= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2uvkjQlv5XdKAnae/lzMDYSQYG/vfJd2EoK2s4BCYmA=; b=CxtEU9exSEg7HtuBb2gYwdtFN/0UMxnehy3jSOGrkejnRtnUzbB+nmT238EmEeiv2T2ETv 2XmfBT6wH7abt6Dg== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id B207C139F8; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id YKawKi/z3GSNKQAAMHmgww (envelope-from ); Wed, 16 Aug 2023 16:02:55 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Curtis Malainey Subject: [PATCH RFC 5/9] ALSA: rawmidi: Don't embed device Date: Wed, 16 Aug 2023 18:02:48 +0200 Message-Id: <20230816160252.23396-6-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230816160252.23396-1-tiwai@suse.de> References: <20230816160252.23396-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: BMHGUSXSWIOH6JVOL4M34LICKZ7SEKOZ X-Message-ID-Hash: BMHGUSXSWIOH6JVOL4M34LICKZ7SEKOZ X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: This patch detaches the struct device from the snd_rawmidi object by allocating via snd_device_alloc(), just like done for other devices. Signed-off-by: Takashi Iwai --- include/sound/rawmidi.h | 2 +- sound/core/rawmidi.c | 29 +++++++++++++---------------- sound/core/ump.c | 8 ++++---- 3 files changed, 18 insertions(+), 21 deletions(-) diff --git a/include/sound/rawmidi.h b/include/sound/rawmidi.h index b0197b1d1fe4..f31cabf0158c 100644 --- a/include/sound/rawmidi.h +++ b/include/sound/rawmidi.h @@ -135,7 +135,7 @@ struct snd_rawmidi { struct mutex open_mutex; wait_queue_head_t open_wait; - struct device dev; + struct device *dev; struct snd_info_entry *proc_entry; diff --git a/sound/core/rawmidi.c b/sound/core/rawmidi.c index 2d3cec908154..ba06484ac4aa 100644 --- a/sound/core/rawmidi.c +++ b/sound/core/rawmidi.c @@ -44,11 +44,11 @@ static LIST_HEAD(snd_rawmidi_devices); static DEFINE_MUTEX(register_mutex); #define rmidi_err(rmidi, fmt, args...) \ - dev_err(&(rmidi)->dev, fmt, ##args) + dev_err((rmidi)->dev, fmt, ##args) #define rmidi_warn(rmidi, fmt, args...) \ - dev_warn(&(rmidi)->dev, fmt, ##args) + dev_warn((rmidi)->dev, fmt, ##args) #define rmidi_dbg(rmidi, fmt, args...) \ - dev_dbg(&(rmidi)->dev, fmt, ##args) + dev_dbg((rmidi)->dev, fmt, ##args) struct snd_rawmidi_status32 { s32 stream; @@ -1877,11 +1877,6 @@ static int snd_rawmidi_alloc_substreams(struct snd_rawmidi *rmidi, return 0; } -static void release_rawmidi_device(struct device *dev) -{ - kfree(container_of(dev, struct snd_rawmidi, dev)); -} - /* used for both rawmidi and ump */ int snd_rawmidi_init(struct snd_rawmidi *rmidi, struct snd_card *card, char *id, int device, @@ -1906,12 +1901,13 @@ int snd_rawmidi_init(struct snd_rawmidi *rmidi, if (id != NULL) strscpy(rmidi->id, id, sizeof(rmidi->id)); - snd_device_initialize(&rmidi->dev, card); - rmidi->dev.release = release_rawmidi_device; + err = snd_device_alloc(&rmidi->dev, card); + if (err < 0) + return err; if (rawmidi_is_ump(rmidi)) - dev_set_name(&rmidi->dev, "umpC%iD%i", card->number, device); + dev_set_name(rmidi->dev, "umpC%iD%i", card->number, device); else - dev_set_name(&rmidi->dev, "midiC%iD%i", card->number, device); + dev_set_name(rmidi->dev, "midiC%iD%i", card->number, device); err = snd_rawmidi_alloc_substreams(rmidi, &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT], @@ -1996,7 +1992,8 @@ int snd_rawmidi_free(struct snd_rawmidi *rmidi) snd_rawmidi_free_substreams(&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]); if (rmidi->private_free) rmidi->private_free(rmidi); - put_device(&rmidi->dev); + put_device(rmidi->dev); + kfree(rmidi); return 0; } EXPORT_SYMBOL_GPL(snd_rawmidi_free); @@ -2038,7 +2035,7 @@ static int snd_rawmidi_dev_register(struct snd_device *device) err = snd_register_device(SNDRV_DEVICE_TYPE_RAWMIDI, rmidi->card, rmidi->device, - &snd_rawmidi_f_ops, rmidi, &rmidi->dev); + &snd_rawmidi_f_ops, rmidi, rmidi->dev); if (err < 0) { rmidi_err(rmidi, "unable to register\n"); goto error; @@ -2103,7 +2100,7 @@ static int snd_rawmidi_dev_register(struct snd_device *device) return 0; error_unregister: - snd_unregister_device(&rmidi->dev); + snd_unregister_device(rmidi->dev); error: mutex_lock(®ister_mutex); list_del(&rmidi->list); @@ -2142,7 +2139,7 @@ static int snd_rawmidi_dev_disconnect(struct snd_device *device) rmidi->ossreg = 0; } #endif /* CONFIG_SND_OSSEMUL */ - snd_unregister_device(&rmidi->dev); + snd_unregister_device(rmidi->dev); mutex_unlock(&rmidi->open_mutex); mutex_unlock(®ister_mutex); return 0; diff --git a/sound/core/ump.c b/sound/core/ump.c index 246348766ec1..fbe2892e72fd 100644 --- a/sound/core/ump.c +++ b/sound/core/ump.c @@ -13,10 +13,10 @@ #include #include -#define ump_err(ump, fmt, args...) dev_err(&(ump)->core.dev, fmt, ##args) -#define ump_warn(ump, fmt, args...) dev_warn(&(ump)->core.dev, fmt, ##args) -#define ump_info(ump, fmt, args...) dev_info(&(ump)->core.dev, fmt, ##args) -#define ump_dbg(ump, fmt, args...) dev_dbg(&(ump)->core.dev, fmt, ##args) +#define ump_err(ump, fmt, args...) dev_err((ump)->core.dev, fmt, ##args) +#define ump_warn(ump, fmt, args...) dev_warn((ump)->core.dev, fmt, ##args) +#define ump_info(ump, fmt, args...) dev_info((ump)->core.dev, fmt, ##args) +#define ump_dbg(ump, fmt, args...) dev_dbg((ump)->core.dev, fmt, ##args) static int snd_ump_dev_register(struct snd_rawmidi *rmidi); static int snd_ump_dev_unregister(struct snd_rawmidi *rmidi); From patchwork Wed Aug 16 16:02:49 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13355463 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id C8F73C04A6A for ; Wed, 16 Aug 2023 16:07:01 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 07FC1846; Wed, 16 Aug 2023 18:06:10 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 07FC1846 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692202020; bh=s21emmDN4l83Qqp4a+7PD/G55zYwVEuSBjIeWbzVW5I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=PVHx2GOStn0Kqs4YimeWHgky2O9Tg6iaPAYTf+IWhTDBtrDGqXgaM8ZyFaUTGv/9w iZLRJiA7nGbo85UziqnBnLOhkmvtRpUNuRf5TmWjGwC9r1nR+8UgBcj2pcNJX9jaNo 3qUgHreESE2VFg2XUMAKneb1G5ZONjXvkQG+npX8= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 97BB8F8057B; Wed, 16 Aug 2023 18:05:10 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 2CF85F8057B; Wed, 16 Aug 2023 18:05:10 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 7624CF80552; Wed, 16 Aug 2023 18:05:03 +0200 (CEST) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 66EAEF8016D for ; Wed, 16 Aug 2023 18:02:56 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 66EAEF8016D Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=TvO8faOx; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=d0m89JpH Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id ECD37218BB; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=moxFjDgMy8DuAzVahERAibZZiSndsUYjJ+/jGKNqsDE=; b=TvO8faOxNV+1GqfdHFXekdiCbqO48y4rbkxSMJz2vpc8tQRa/zMg1bYZ8EUaBBBEAZrjJ4 qP9RCv+13dnVaHaTtKUrRqelR3c0l3S4LLCiH3URIeZaG/sY1DPd97w4t74yeQPX1htm6o 0frYKF+2ALqOf0kjxz/KmZqDShIp80A= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692201775; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=moxFjDgMy8DuAzVahERAibZZiSndsUYjJ+/jGKNqsDE=; b=d0m89JpHGbaMJRmDjGFud9V8MEvvxhvy/DYqVU7ynthNnzSO7YXi6mg1Tn+ln55I+yE8O9 ysJaMEm6NG1vq4DQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id CFA85133F2; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 6IXiMS/z3GSNKQAAMHmgww (envelope-from ); Wed, 16 Aug 2023 16:02:55 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Curtis Malainey Subject: [PATCH RFC 6/9] ALSA: compress: Don't embed device Date: Wed, 16 Aug 2023 18:02:49 +0200 Message-Id: <20230816160252.23396-7-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230816160252.23396-1-tiwai@suse.de> References: <20230816160252.23396-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: F7SGKQWX6LHKQXPZRRAH7DLUG2L6MAL3 X-Message-ID-Hash: F7SGKQWX6LHKQXPZRRAH7DLUG2L6MAL3 X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Embedding the struct device to snd_compr object may result in UAF when the delayed kobj release is used. Like other devices, let's detach the struct device from the snd_compr by allocating dynamically via snd_device_alloc(). Signed-off-by: Takashi Iwai --- include/sound/compress_driver.h | 2 +- sound/core/compress_offload.c | 16 ++++++++++------ 2 files changed, 11 insertions(+), 7 deletions(-) diff --git a/include/sound/compress_driver.h b/include/sound/compress_driver.h index d91289c6f00e..bcf872c17dd3 100644 --- a/include/sound/compress_driver.h +++ b/include/sound/compress_driver.h @@ -148,7 +148,7 @@ struct snd_compr_ops { */ struct snd_compr { const char *name; - struct device dev; + struct device *dev; struct snd_compr_ops *ops; void *private_data; struct snd_card *card; diff --git a/sound/core/compress_offload.c b/sound/core/compress_offload.c index 30f73097447b..619371aa9964 100644 --- a/sound/core/compress_offload.c +++ b/sound/core/compress_offload.c @@ -546,7 +546,7 @@ static int snd_compr_allocate_buffer(struct snd_compr_stream *stream, if (stream->runtime->dma_buffer_p) { if (buffer_size > stream->runtime->dma_buffer_p->bytes) - dev_err(&stream->device->dev, + dev_err(stream->device->dev, "Not enough DMA buffer"); else buffer = stream->runtime->dma_buffer_p->area; @@ -1070,7 +1070,7 @@ static int snd_compress_dev_register(struct snd_device *device) /* register compressed device */ ret = snd_register_device(SNDRV_DEVICE_TYPE_COMPRESS, compr->card, compr->device, - &snd_compr_file_ops, compr, &compr->dev); + &snd_compr_file_ops, compr, compr->dev); if (ret < 0) { pr_err("snd_register_device failed %d\n", ret); return ret; @@ -1084,7 +1084,7 @@ static int snd_compress_dev_disconnect(struct snd_device *device) struct snd_compr *compr; compr = device->device_data; - snd_unregister_device(&compr->dev); + snd_unregister_device(compr->dev); return 0; } @@ -1158,7 +1158,7 @@ static int snd_compress_dev_free(struct snd_device *device) compr = device->device_data; snd_compress_proc_done(compr); - put_device(&compr->dev); + put_device(compr->dev); return 0; } @@ -1189,12 +1189,16 @@ int snd_compress_new(struct snd_card *card, int device, snd_compress_set_id(compr, id); - snd_device_initialize(&compr->dev, card); - dev_set_name(&compr->dev, "comprC%iD%i", card->number, device); + ret = snd_device_alloc(&compr->dev, card); + if (ret) + return ret; + dev_set_name(compr->dev, "comprC%iD%i", card->number, device); ret = snd_device_new(card, SNDRV_DEV_COMPRESS, compr, &ops); if (ret == 0) snd_compress_proc_init(compr); + else + put_device(compr->dev); return ret; } From patchwork Wed Aug 16 16:02:50 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13355461 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 917AFC001E0 for ; Wed, 16 Aug 2023 16:06:33 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 5472D84A; Wed, 16 Aug 2023 18:05:41 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 5472D84A DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692201991; bh=J2JFjKxmnj+2Zg82ee2JDZFziDfpEeii23cZvB5ZQoM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=AilsG5rxLGZKl9RDzKRjeqL5FK4Hw3cHJdKu9WZ7ckXZrODhRXcA6jpVNsW+WLwjR LkUwh/9IHZxussWHsmOqKQoaBid+E+ecueFYh0F6L4Tvi9avRDSVlomaoxbY0xoafx fCAO7x+8x2lu6x35RIrEZ1Oqezr62dc79OrihZ6Y= Received: by alsa1.perex.cz (Postfix, from userid 50401) id E31D7F80549; Wed, 16 Aug 2023 18:05:02 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id F3414F80536; Wed, 16 Aug 2023 18:05:01 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 7A4A2F8016A; Wed, 16 Aug 2023 18:04:58 +0200 (CEST) Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 77C5AF80272 for ; Wed, 16 Aug 2023 18:02:56 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 77C5AF80272 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=F0RDBUUD; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=hiKjiajz Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 1A4921F86C; Wed, 16 Aug 2023 16:02:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692201776; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ru2u5N458a3/VA/29YhYy0dpK2vWU8XfLXpEkrMzJLA=; b=F0RDBUUDMHPllqXcsxExPm7Nr567pocxb8PqDN9m6pvccrMTcUNFM+nCAeIa83BZPGNLJc 00nDRnaAsRKlV2NFfofI3WIJpKbhLIXsOrgJt1fapGMS/hrD8bnRHqsNcZnQSHxoakDhZ7 povuq/bJbizlYnUhmhXPS5shiJGVG88= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692201776; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ru2u5N458a3/VA/29YhYy0dpK2vWU8XfLXpEkrMzJLA=; b=hiKjiajzIAdIzvv8ObpiA12z2BZ1+MdhWh+kggsuZZ8dvl+/ISLfioBypBamPTEy107TMD TfzVIscXttjohcBQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id F0481139F8; Wed, 16 Aug 2023 16:02:55 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id mA7POS/z3GSNKQAAMHmgww (envelope-from ); Wed, 16 Aug 2023 16:02:55 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Curtis Malainey Subject: [PATCH RFC 7/9] ALSA: timer: Create device with snd_device_alloc() Date: Wed, 16 Aug 2023 18:02:50 +0200 Message-Id: <20230816160252.23396-8-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230816160252.23396-1-tiwai@suse.de> References: <20230816160252.23396-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: GLWY7YNCTY3LVNUFE3TE7H2RIBBVHU57 X-Message-ID-Hash: GLWY7YNCTY3LVNUFE3TE7H2RIBBVHU57 X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Align with the other components, and use snd_device_alloc() for the new sound device for timer, too. No functional changes. Signed-off-by: Takashi Iwai --- sound/core/timer.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/sound/core/timer.c b/sound/core/timer.c index 9d0d2a5c2e15..e6e551d4a29e 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -2301,7 +2301,7 @@ static void snd_timer_free_all(void) snd_timer_free(timer); } -static struct device timer_dev; +static struct device *timer_dev; /* * ENTRY functions @@ -2311,8 +2311,10 @@ static int __init alsa_timer_init(void) { int err; - snd_device_initialize(&timer_dev, NULL); - dev_set_name(&timer_dev, "timer"); + err = snd_device_alloc(&timer_dev, NULL); + if (err < 0) + return err; + dev_set_name(timer_dev, "timer"); #ifdef SNDRV_OSS_INFO_DEV_TIMERS snd_oss_info_register(SNDRV_OSS_INFO_DEV_TIMERS, SNDRV_CARDS - 1, @@ -2326,7 +2328,7 @@ static int __init alsa_timer_init(void) } err = snd_register_device(SNDRV_DEVICE_TYPE_TIMER, NULL, 0, - &snd_timer_f_ops, NULL, &timer_dev); + &snd_timer_f_ops, NULL, timer_dev); if (err < 0) { pr_err("ALSA: unable to register timer device (%i)\n", err); snd_timer_free_all(); @@ -2337,15 +2339,15 @@ static int __init alsa_timer_init(void) return 0; put_timer: - put_device(&timer_dev); + put_device(timer_dev); return err; } static void __exit alsa_timer_exit(void) { - snd_unregister_device(&timer_dev); + snd_unregister_device(timer_dev); snd_timer_free_all(); - put_device(&timer_dev); + put_device(timer_dev); snd_timer_proc_done(); #ifdef SNDRV_OSS_INFO_DEV_TIMERS snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_TIMERS, SNDRV_CARDS - 1); From patchwork Wed Aug 16 16:02:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13355458 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id ED71CC001E0 for ; Wed, 16 Aug 2023 16:05:43 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 4F1E2852; Wed, 16 Aug 2023 18:04:51 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 4F1E2852 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692201941; bh=2FdK+5Wi5hG1tKxx/r6nUBGzHtE1ge8gP1TH9v/Pb3U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=Xjl7Hs8a+kG30IZ6hbMiYYvAch0zd7gEMC+bax2Go14Lu78jyQgHLbryOxuOtesji n2oLzfrluJud9xn7TbhCn5xcaJMQTY3uDEccoD+2aB2RjGX/kihtQK01g6KY4l+aEc x03riwlPBNX4b0qvLVdOa3osa6/h6GBb3h1hKucA= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 57DD8F805AE; Wed, 16 Aug 2023 18:03:23 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 9FD97F80536; Wed, 16 Aug 2023 18:03:22 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 94BFFF8025F; Wed, 16 Aug 2023 18:03:18 +0200 (CEST) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 427FBF8025F for ; Wed, 16 Aug 2023 18:02:56 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 427FBF8025F Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=WqErkCVo; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=LZWGyGsD Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 3B4BA218F2; Wed, 16 Aug 2023 16:02:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692201776; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=698G18KDW4ZFQ9Xff688MQngnxCshT9y93JoXN5/sUE=; b=WqErkCVowOCX8ym5Y+6NmjOgl8XF09sdMUH+PWDyh74FR2KdO6doZ4JWqkwy02A91uLqCB B8rwVWdrulwOYrz+3oTwHw0K8VscplXQVNmjfN0GwxgBjJvQPff8+FYYU9dFsvLL9Iekwj O10F6mBQyrKR0SJs88qHA5dU8iVlhtc= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692201776; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=698G18KDW4ZFQ9Xff688MQngnxCshT9y93JoXN5/sUE=; b=LZWGyGsDL18idvQ97NZbt3Y/auVDwtC4MkC14zrl0QBhzFSLGr2SAI+Uhf0JH07ZEg13MF aX3hSm9Jg6ObxpCA== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 1EAB9133F2; Wed, 16 Aug 2023 16:02:56 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id AMw3BjDz3GSNKQAAMHmgww (envelope-from ); Wed, 16 Aug 2023 16:02:56 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Curtis Malainey Subject: [PATCH RFC 8/9] ALSA: seq: Create device with snd_device_alloc() Date: Wed, 16 Aug 2023 18:02:51 +0200 Message-Id: <20230816160252.23396-9-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230816160252.23396-1-tiwai@suse.de> References: <20230816160252.23396-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: POOOWI4SVBD32FCT2MDBRXGXBFPWLMZU X-Message-ID-Hash: POOOWI4SVBD32FCT2MDBRXGXBFPWLMZU X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Align with the other components, and use snd_device_alloc() for the new sound device for sequencer, too. No functional changes. Signed-off-by: Takashi Iwai --- sound/core/seq/seq_clientmgr.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index e3f9ea67d019..42a705141050 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -2721,7 +2721,7 @@ static const struct file_operations snd_seq_f_ops = .compat_ioctl = snd_seq_ioctl_compat, }; -static struct device seq_dev; +static struct device *seq_dev; /* * register sequencer device @@ -2730,15 +2730,17 @@ int __init snd_sequencer_device_init(void) { int err; - snd_device_initialize(&seq_dev, NULL); - dev_set_name(&seq_dev, "seq"); + err = snd_device_alloc(&seq_dev, NULL); + if (err < 0) + return err; + dev_set_name(seq_dev, "seq"); mutex_lock(®ister_mutex); err = snd_register_device(SNDRV_DEVICE_TYPE_SEQUENCER, NULL, 0, - &snd_seq_f_ops, NULL, &seq_dev); + &snd_seq_f_ops, NULL, seq_dev); mutex_unlock(®ister_mutex); if (err < 0) { - put_device(&seq_dev); + put_device(seq_dev); return err; } @@ -2752,6 +2754,6 @@ int __init snd_sequencer_device_init(void) */ void snd_sequencer_device_done(void) { - snd_unregister_device(&seq_dev); - put_device(&seq_dev); + snd_unregister_device(seq_dev); + put_device(seq_dev); } From patchwork Wed Aug 16 16:02:52 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Iwai X-Patchwork-Id: 13355460 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 6A64BC001E0 for ; Wed, 16 Aug 2023 16:06:09 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 902C3851; Wed, 16 Aug 2023 18:05:17 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 902C3851 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692201967; bh=OKPiTg6FwlFvX2rrJjBEWEffWo3+Mp5JCRJsN7Npf0I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=f3kNq+kFQ3t1HHE7R6RU5bFtIJoBFkPrhaASf914FSFpcDdRkA2yjrrFLEwsQxGsT 9oklKEP3w4hYJiMSCWrr5kSIDGs5AZWNYobc2xkppeWxrSPpw94ntPocJXAIfkUnFH MjZE0vYPp6QuzbKt+F2aGbQ8sIXw9JgsOpTqpQOo= Received: by alsa1.perex.cz (Postfix, from userid 50401) id 8EBA3F805B2; Wed, 16 Aug 2023 18:03:27 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 0A0E4F805B2; Wed, 16 Aug 2023 18:03:27 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 29799F805AA; Wed, 16 Aug 2023 18:03:22 +0200 (CEST) Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.220.28]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 7B9FDF80536 for ; Wed, 16 Aug 2023 18:02:57 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 7B9FDF80536 Authentication-Results: alsa1.perex.cz; dkim=pass (1024-bit key, unprotected) header.d=suse.de header.i=@suse.de header.a=rsa-sha256 header.s=susede2_rsa header.b=gthfc1Xy; dkim=pass header.d=suse.de header.i=@suse.de header.a=ed25519-sha256 header.s=susede2_ed25519 header.b=1/xNzTev Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 5C3B2218FA; Wed, 16 Aug 2023 16:02:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1692201776; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=77O/JPDg7vKWbPqXtZBxgbM5y4SSc9UJZ+CrN6/1FI0=; b=gthfc1XyFb+znSHF9qSHog3mWBsmrvZhH0EQWfUxu8M6t2IAyyj7z3a3p5fNoChdpiokkb QYKeO4LBiVwEbYQpE6E23VH0ISpu6W/qy11jRttJ5+h/MeQ7U3gXm/qqNe6XUnKe8WJPZR gTEYWjjhovX5qcKXFX8060vHK8pq+Bs= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1692201776; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=77O/JPDg7vKWbPqXtZBxgbM5y4SSc9UJZ+CrN6/1FI0=; b=1/xNzTev7iz8ldWMFb/ITZVHnClVT8QMzwJvY4FyRK1XhLN7JDNfzz+tGFTo/ERCTh7atN RNFu78wT309+hvDQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 3F2AE133F2; Wed, 16 Aug 2023 16:02:56 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id 6HuSDjDz3GSNKQAAMHmgww (envelope-from ); Wed, 16 Aug 2023 16:02:56 +0000 From: Takashi Iwai To: alsa-devel@alsa-project.org Cc: Curtis Malainey Subject: [PATCH RFC 9/9] ALSA: core: Drop snd_device_initialize() Date: Wed, 16 Aug 2023 18:02:52 +0200 Message-Id: <20230816160252.23396-10-tiwai@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230816160252.23396-1-tiwai@suse.de> References: <20230816160252.23396-1-tiwai@suse.de> MIME-Version: 1.0 Message-ID-Hash: NSIU6CULE67Y6TFNFOYUHSHBFODKWM4Z X-Message-ID-Hash: NSIU6CULE67Y6TFNFOYUHSHBFODKWM4Z X-MailFrom: tiwai@suse.de X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: Now all users of snd_device_intialize() are gone, let's drop it. Signed-off-by: Takashi Iwai --- include/sound/core.h | 1 - sound/core/init.c | 23 ----------------------- 2 files changed, 24 deletions(-) diff --git a/include/sound/core.h b/include/sound/core.h index f3f6b720a278..dfef0c9d4b9f 100644 --- a/include/sound/core.h +++ b/include/sound/core.h @@ -240,7 +240,6 @@ extern struct dentry *sound_debugfs_root; void snd_request_card(int card); int snd_device_alloc(struct device **dev_p, struct snd_card *card); -void snd_device_initialize(struct device *dev, struct snd_card *card); int snd_register_device(int type, struct snd_card *card, int dev, const struct file_operations *f_ops, diff --git a/sound/core/init.c b/sound/core/init.c index a4de9f00d90f..d61bde1225f2 100644 --- a/sound/core/init.c +++ b/sound/core/init.c @@ -111,29 +111,6 @@ static int get_slot_from_bitmask(int mask, int (*check)(struct module *, int), return mask; /* unchanged */ } -/* the default release callback set in snd_device_initialize() below; - * this is just NOP for now, as almost all jobs are already done in - * dev_free callback of snd_device chain instead. - */ -static void default_release(struct device *dev) -{ -} - -/** - * snd_device_initialize - Initialize struct device for sound devices - * @dev: device to initialize - * @card: card to assign, optional - */ -void snd_device_initialize(struct device *dev, struct snd_card *card) -{ - device_initialize(dev); - if (card) - dev->parent = &card->card_dev; - dev->class = &sound_class; - dev->release = default_release; -} -EXPORT_SYMBOL_GPL(snd_device_initialize); - /* the default release callback set in snd_device_alloc() */ static void default_release_alloc(struct device *dev) {