From patchwork Wed May 10 16:22:31 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans de Goede X-Patchwork-Id: 13237058 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EEECBC77B7C for ; Wed, 10 May 2023 16:25:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231268AbjEJQYi (ORCPT ); Wed, 10 May 2023 12:24:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48310 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235426AbjEJQYN (ORCPT ); Wed, 10 May 2023 12:24:13 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CD06D7AB2 for ; Wed, 10 May 2023 09:22:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1683735767; h=from:from:reply-to:subject:subject: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=QW21yPHCLXG3bHRk6Icre9ZFhw2S5SDasltgDW8xSB8=; b=TkcGCRzRuKX9lvDZjwnmNGMToOs/tmPWCyxawAidolfYWX4suHaNbDW2anxlcoUlWnc93H MAA65ER/ttNJgBOKCPdID4Ph8Gpf/weW6TocbHi/xgTrQ3Gydx8baVxBauRsHZTB1/jGf6 kvT7sjwJiG6SG8FkxWY1aCeW4OQJ/ao= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-540-5ElXnbpxPMGZC4-5R_I32g-1; Wed, 10 May 2023 12:22:40 -0400 X-MC-Unique: 5ElXnbpxPMGZC4-5R_I32g-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.rdu2.redhat.com [10.11.54.2]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id D10161854AE2; Wed, 10 May 2023 16:22:39 +0000 (UTC) Received: from shalem.redhat.com (unknown [10.39.195.159]) by smtp.corp.redhat.com (Postfix) with ESMTP id 897864078906; Wed, 10 May 2023 16:22:37 +0000 (UTC) From: Hans de Goede To: Pavel Machek , Jacek Anaszewski , Lee Jones , Sebastian Reichel , Greg Kroah-Hartman , Michael Grzeschik , Johannes Berg , Pablo Neira Ayuso , Jozsef Kadlecsik Cc: Hans de Goede , linux-leds@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, coreteam@netfilter.org, Yauhen Kharuzhy Subject: [PATCH RESEND 1/4] leds: Change led_trigger_blink[_oneshot]() delay parameters to pass-by-value Date: Wed, 10 May 2023 18:22:31 +0200 Message-Id: <20230510162234.291439-2-hdegoede@redhat.com> In-Reply-To: <20230510162234.291439-1-hdegoede@redhat.com> References: <20230510162234.291439-1-hdegoede@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.1 on 10.11.54.2 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org led_blink_set[_oneshot]()'s delay_on and delay_off function parameters are pass by reference, so that hw-blink implementations can report back the actual achieved delays when the values have been rounded to something the hw supports. This is really only interesting for the sysfs API / the timer trigger. Other triggers don't really care about this and none of the callers of led_trigger_blink[_oneshot]() do anything with the returned delay values. Change the led_trigger_blink[_oneshot]() delay parameters to pass-by-value, there are 2 reasons for this: 1. led_cdev->blink_set() may sleep, while led_trigger_blink() may not. So on hw where led_cdev->blink_set() sleeps the call needs to be deferred to a workqueue, in which case the actual achieved delays are unknown (this is a preparation patch for the deferring). 2. Since the callers don't care about the actual achieved delays, allowing callers to directly pass a value leads to simpler code for most callers. Reviewed-by: Jacek Anaszewski Tested-by: Yauhen Kharuzhy Signed-off-by: Hans de Goede Acked-by: Sebastian Reichel Acked-by: Florian Westphal Acked-by: Greg Kroah-Hartman --- drivers/leds/led-triggers.c | 16 ++++++++-------- drivers/leds/trigger/ledtrig-disk.c | 9 +++------ drivers/leds/trigger/ledtrig-mtd.c | 8 ++------ drivers/net/arcnet/arcnet.c | 8 ++------ drivers/power/supply/power_supply_leds.c | 5 +---- drivers/usb/common/led.c | 4 +--- include/linux/leds.h | 16 ++++++++-------- net/mac80211/led.c | 2 +- net/mac80211/led.h | 8 ++------ net/netfilter/xt_LED.c | 3 +-- 10 files changed, 29 insertions(+), 50 deletions(-) diff --git a/drivers/leds/led-triggers.c b/drivers/leds/led-triggers.c index 072491d3e17b..e06361165e9b 100644 --- a/drivers/leds/led-triggers.c +++ b/drivers/leds/led-triggers.c @@ -393,8 +393,8 @@ void led_trigger_event(struct led_trigger *trig, EXPORT_SYMBOL_GPL(led_trigger_event); static void led_trigger_blink_setup(struct led_trigger *trig, - unsigned long *delay_on, - unsigned long *delay_off, + unsigned long delay_on, + unsigned long delay_off, int oneshot, int invert) { @@ -406,25 +406,25 @@ static void led_trigger_blink_setup(struct led_trigger *trig, rcu_read_lock(); list_for_each_entry_rcu(led_cdev, &trig->led_cdevs, trig_list) { if (oneshot) - led_blink_set_oneshot(led_cdev, delay_on, delay_off, + led_blink_set_oneshot(led_cdev, &delay_on, &delay_off, invert); else - led_blink_set(led_cdev, delay_on, delay_off); + led_blink_set(led_cdev, &delay_on, &delay_off); } rcu_read_unlock(); } void led_trigger_blink(struct led_trigger *trig, - unsigned long *delay_on, - unsigned long *delay_off) + unsigned long delay_on, + unsigned long delay_off) { led_trigger_blink_setup(trig, delay_on, delay_off, 0, 0); } EXPORT_SYMBOL_GPL(led_trigger_blink); void led_trigger_blink_oneshot(struct led_trigger *trig, - unsigned long *delay_on, - unsigned long *delay_off, + unsigned long delay_on, + unsigned long delay_off, int invert) { led_trigger_blink_setup(trig, delay_on, delay_off, 1, invert); diff --git a/drivers/leds/trigger/ledtrig-disk.c b/drivers/leds/trigger/ledtrig-disk.c index 0b7dfbd04273..e9b87ee944f2 100644 --- a/drivers/leds/trigger/ledtrig-disk.c +++ b/drivers/leds/trigger/ledtrig-disk.c @@ -19,16 +19,13 @@ DEFINE_LED_TRIGGER(ledtrig_disk_write); void ledtrig_disk_activity(bool write) { - unsigned long blink_delay = BLINK_DELAY; - - led_trigger_blink_oneshot(ledtrig_disk, - &blink_delay, &blink_delay, 0); + led_trigger_blink_oneshot(ledtrig_disk, BLINK_DELAY, BLINK_DELAY, 0); if (write) led_trigger_blink_oneshot(ledtrig_disk_write, - &blink_delay, &blink_delay, 0); + BLINK_DELAY, BLINK_DELAY, 0); else led_trigger_blink_oneshot(ledtrig_disk_read, - &blink_delay, &blink_delay, 0); + BLINK_DELAY, BLINK_DELAY, 0); } EXPORT_SYMBOL(ledtrig_disk_activity); diff --git a/drivers/leds/trigger/ledtrig-mtd.c b/drivers/leds/trigger/ledtrig-mtd.c index 8fa763c2269b..bbe6876a249d 100644 --- a/drivers/leds/trigger/ledtrig-mtd.c +++ b/drivers/leds/trigger/ledtrig-mtd.c @@ -22,12 +22,8 @@ DEFINE_LED_TRIGGER(ledtrig_nand); void ledtrig_mtd_activity(void) { - unsigned long blink_delay = BLINK_DELAY; - - led_trigger_blink_oneshot(ledtrig_mtd, - &blink_delay, &blink_delay, 0); - led_trigger_blink_oneshot(ledtrig_nand, - &blink_delay, &blink_delay, 0); + led_trigger_blink_oneshot(ledtrig_mtd, BLINK_DELAY, BLINK_DELAY, 0); + led_trigger_blink_oneshot(ledtrig_nand, BLINK_DELAY, BLINK_DELAY, 0); } EXPORT_SYMBOL(ledtrig_mtd_activity); diff --git a/drivers/net/arcnet/arcnet.c b/drivers/net/arcnet/arcnet.c index 1bad1866ae46..99265667538c 100644 --- a/drivers/net/arcnet/arcnet.c +++ b/drivers/net/arcnet/arcnet.c @@ -196,13 +196,10 @@ static void arcnet_dump_packet(struct net_device *dev, int bufnum, void arcnet_led_event(struct net_device *dev, enum arcnet_led_event event) { struct arcnet_local *lp = netdev_priv(dev); - unsigned long led_delay = 350; - unsigned long tx_delay = 50; switch (event) { case ARCNET_LED_EVENT_RECON: - led_trigger_blink_oneshot(lp->recon_led_trig, - &led_delay, &led_delay, 0); + led_trigger_blink_oneshot(lp->recon_led_trig, 350, 350, 0); break; case ARCNET_LED_EVENT_OPEN: led_trigger_event(lp->tx_led_trig, LED_OFF); @@ -213,8 +210,7 @@ void arcnet_led_event(struct net_device *dev, enum arcnet_led_event event) led_trigger_event(lp->recon_led_trig, LED_OFF); break; case ARCNET_LED_EVENT_TX: - led_trigger_blink_oneshot(lp->tx_led_trig, - &tx_delay, &tx_delay, 0); + led_trigger_blink_oneshot(lp->tx_led_trig, 50, 50, 0); break; } } diff --git a/drivers/power/supply/power_supply_leds.c b/drivers/power/supply/power_supply_leds.c index 702bf83f6e6d..e2f554e4e4e6 100644 --- a/drivers/power/supply/power_supply_leds.c +++ b/drivers/power/supply/power_supply_leds.c @@ -22,8 +22,6 @@ static void power_supply_update_bat_leds(struct power_supply *psy) { union power_supply_propval status; - unsigned long delay_on = 0; - unsigned long delay_off = 0; if (power_supply_get_property(psy, POWER_SUPPLY_PROP_STATUS, &status)) return; @@ -42,8 +40,7 @@ static void power_supply_update_bat_leds(struct power_supply *psy) led_trigger_event(psy->charging_full_trig, LED_FULL); led_trigger_event(psy->charging_trig, LED_FULL); led_trigger_event(psy->full_trig, LED_OFF); - led_trigger_blink(psy->charging_blink_full_solid_trig, - &delay_on, &delay_off); + led_trigger_blink(psy->charging_blink_full_solid_trig, 0, 0); break; default: led_trigger_event(psy->charging_full_trig, LED_OFF); diff --git a/drivers/usb/common/led.c b/drivers/usb/common/led.c index 0865dd44a80a..1de18d90b134 100644 --- a/drivers/usb/common/led.c +++ b/drivers/usb/common/led.c @@ -14,8 +14,6 @@ #define BLINK_DELAY 30 -static unsigned long usb_blink_delay = BLINK_DELAY; - DEFINE_LED_TRIGGER(ledtrig_usb_gadget); DEFINE_LED_TRIGGER(ledtrig_usb_host); @@ -32,7 +30,7 @@ void usb_led_activity(enum usb_led_event ev) break; } /* led_trigger_blink_oneshot() handles trig == NULL gracefully */ - led_trigger_blink_oneshot(trig, &usb_blink_delay, &usb_blink_delay, 0); + led_trigger_blink_oneshot(trig, BLINK_DELAY, BLINK_DELAY, 0); } EXPORT_SYMBOL_GPL(usb_led_activity); diff --git a/include/linux/leds.h b/include/linux/leds.h index c39bbf17a25b..c3dc22d184e2 100644 --- a/include/linux/leds.h +++ b/include/linux/leds.h @@ -433,11 +433,11 @@ void led_trigger_register_simple(const char *name, struct led_trigger **trigger); void led_trigger_unregister_simple(struct led_trigger *trigger); void led_trigger_event(struct led_trigger *trigger, enum led_brightness event); -void led_trigger_blink(struct led_trigger *trigger, unsigned long *delay_on, - unsigned long *delay_off); +void led_trigger_blink(struct led_trigger *trigger, unsigned long delay_on, + unsigned long delay_off); void led_trigger_blink_oneshot(struct led_trigger *trigger, - unsigned long *delay_on, - unsigned long *delay_off, + unsigned long delay_on, + unsigned long delay_off, int invert); void led_trigger_set_default(struct led_classdev *led_cdev); int led_trigger_set(struct led_classdev *led_cdev, struct led_trigger *trigger); @@ -487,11 +487,11 @@ static inline void led_trigger_unregister_simple(struct led_trigger *trigger) {} static inline void led_trigger_event(struct led_trigger *trigger, enum led_brightness event) {} static inline void led_trigger_blink(struct led_trigger *trigger, - unsigned long *delay_on, - unsigned long *delay_off) {} + unsigned long delay_on, + unsigned long delay_off) {} static inline void led_trigger_blink_oneshot(struct led_trigger *trigger, - unsigned long *delay_on, - unsigned long *delay_off, + unsigned long delay_on, + unsigned long delay_off, int invert) {} static inline void led_trigger_set_default(struct led_classdev *led_cdev) {} static inline int led_trigger_set(struct led_classdev *led_cdev, diff --git a/net/mac80211/led.c b/net/mac80211/led.c index 6de8d0ad5497..2dc732147e85 100644 --- a/net/mac80211/led.c +++ b/net/mac80211/led.c @@ -282,7 +282,7 @@ static void tpt_trig_timer(struct timer_list *t) } } - led_trigger_blink(&local->tpt_led, &on, &off); + led_trigger_blink(&local->tpt_led, on, off); } const char * diff --git a/net/mac80211/led.h b/net/mac80211/led.h index b71a1428d883..d25f13346b82 100644 --- a/net/mac80211/led.h +++ b/net/mac80211/led.h @@ -13,22 +13,18 @@ static inline void ieee80211_led_rx(struct ieee80211_local *local) { #ifdef CONFIG_MAC80211_LEDS - unsigned long led_delay = MAC80211_BLINK_DELAY; - if (!atomic_read(&local->rx_led_active)) return; - led_trigger_blink_oneshot(&local->rx_led, &led_delay, &led_delay, 0); + led_trigger_blink_oneshot(&local->rx_led, MAC80211_BLINK_DELAY, MAC80211_BLINK_DELAY, 0); #endif } static inline void ieee80211_led_tx(struct ieee80211_local *local) { #ifdef CONFIG_MAC80211_LEDS - unsigned long led_delay = MAC80211_BLINK_DELAY; - if (!atomic_read(&local->tx_led_active)) return; - led_trigger_blink_oneshot(&local->tx_led, &led_delay, &led_delay, 0); + led_trigger_blink_oneshot(&local->tx_led, MAC80211_BLINK_DELAY, MAC80211_BLINK_DELAY, 0); #endif } diff --git a/net/netfilter/xt_LED.c b/net/netfilter/xt_LED.c index 66b0f941d8fb..36c9720ad8d6 100644 --- a/net/netfilter/xt_LED.c +++ b/net/netfilter/xt_LED.c @@ -43,7 +43,6 @@ led_tg(struct sk_buff *skb, const struct xt_action_param *par) { const struct xt_led_info *ledinfo = par->targinfo; struct xt_led_info_internal *ledinternal = ledinfo->internal_data; - unsigned long led_delay = XT_LED_BLINK_DELAY; /* * If "always blink" is enabled, and there's still some time until the @@ -52,7 +51,7 @@ led_tg(struct sk_buff *skb, const struct xt_action_param *par) if ((ledinfo->delay > 0) && ledinfo->always_blink && timer_pending(&ledinternal->timer)) led_trigger_blink_oneshot(&ledinternal->netfilter_led_trigger, - &led_delay, &led_delay, 1); + XT_LED_BLINK_DELAY, XT_LED_BLINK_DELAY, 1); else led_trigger_event(&ledinternal->netfilter_led_trigger, LED_FULL);