From patchwork Sun Aug 7 09:48:45 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Takashi Sakamoto X-Patchwork-Id: 9266287 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4E27860754 for ; Sun, 7 Aug 2016 09:55:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4064727BFC for ; Sun, 7 Aug 2016 09:55:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 33CEC2808C; Sun, 7 Aug 2016 09:55:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 933AC27BFC for ; Sun, 7 Aug 2016 09:55:18 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id C0CEC266E94; Sun, 7 Aug 2016 11:55:17 +0200 (CEST) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id CAC4B2660C7; Sun, 7 Aug 2016 11:49:56 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id A97E4266015; Sun, 7 Aug 2016 11:49:53 +0200 (CEST) Received: from smtp-proxy004.phy.lolipop.jp (smtp-proxy004.phy.lolipop.jp [157.7.104.45]) by alsa0.perex.cz (Postfix) with ESMTP id 25E3D265B4C for ; Sun, 7 Aug 2016 11:49:38 +0200 (CEST) Received: from smtp-proxy004.phy.lolipop.lan (HELO smtp-proxy004.phy.lolipop.jp) (172.19.44.45) (smtp-auth username m12129643-o-takashi, mechanism plain) by smtp-proxy004.phy.lolipop.jp (qpsmtpd/0.82) with ESMTPA; Sun, 07 Aug 2016 18:49:34 +0900 Received: from 127.0.0.1 (127.0.0.1) by smtp-proxy004.phy.lolipop.jp (LOLIPOP-Fsecure); Sun, 07 Aug 2016 18:49:15 +0900 (JST) X-Virus-Status: clean(LOLIPOP-Fsecure) From: Takashi Sakamoto To: clemens@ladisch.de, tiwai@suse.de Date: Sun, 7 Aug 2016 18:48:45 +0900 Message-Id: <1470563355-18368-10-git-send-email-o-takashi@sakamocchi.jp> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1470563355-18368-1-git-send-email-o-takashi@sakamocchi.jp> References: <1470563355-18368-1-git-send-email-o-takashi@sakamocchi.jp> Cc: alsa-devel@alsa-project.org Subject: [alsa-devel] [PATCH 09/39] ALSA: seq: optimize pversion function to new design X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP In former commit, actual operations of each ioctl command get argument in kernel space. Copying from/to user space is performed outside of the function. This commit optimizes to the new design. Signed-off-by: Takashi Sakamoto --- sound/core/seq/seq_clientmgr.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/sound/core/seq/seq_clientmgr.c b/sound/core/seq/seq_clientmgr.c index a643b4e..5e81d4f 100644 --- a/sound/core/seq/seq_clientmgr.c +++ b/sound/core/seq/seq_clientmgr.c @@ -1114,9 +1114,12 @@ static unsigned int snd_seq_poll(struct file *file, poll_table * wait) /*-----------------------------------------------------*/ -static int seq_ioctl_pversion(struct snd_seq_client *client, void __user *arg) +static int seq_ioctl_pversion(struct snd_seq_client *client, void *arg) { - return put_user(SNDRV_SEQ_VERSION, (int __user *)arg) ? -EFAULT : 0; + int *version = arg; + + *version = SNDRV_SEQ_VERSION; + return 0; } static int seq_ioctl_client_id(struct snd_seq_client *client, void __user *arg)