Patch "ALSA: timer: Code cleanup" has been added to the 4.3-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    ALSA: timer: Code cleanup

to the 4.3-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     alsa-timer-code-cleanup.patch
and it can be found in the queue-4.3 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From c3b1681375dc6e71d89a3ae00cc3ce9e775a8917 Mon Sep 17 00:00:00 2001
From: Takashi Iwai <tiwai@suse.de>
Date: Thu, 14 Jan 2016 17:01:46 +0100
Subject: ALSA: timer: Code cleanup

From: Takashi Iwai <tiwai@suse.de>

commit c3b1681375dc6e71d89a3ae00cc3ce9e775a8917 upstream.

This is a minor code cleanup without any functional changes:
- Kill keep_flag argument from _snd_timer_stop(), as all callers pass
  only it false.
- Remove redundant NULL check in _snd_timer_stop().

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 sound/core/timer.c |   28 +++++++++++-----------------
 1 file changed, 11 insertions(+), 17 deletions(-)

--- a/sound/core/timer.c
+++ b/sound/core/timer.c
@@ -305,8 +305,7 @@ int snd_timer_open(struct snd_timer_inst
 	return 0;
 }
 
-static int _snd_timer_stop(struct snd_timer_instance *timeri,
-			   int keep_flag, int event);
+static int _snd_timer_stop(struct snd_timer_instance *timeri, int event);
 
 /*
  * close a timer instance
@@ -348,7 +347,7 @@ int snd_timer_close(struct snd_timer_ins
 		spin_unlock_irq(&timer->lock);
 		mutex_lock(&register_mutex);
 		list_del(&timeri->open_list);
-		if (timer && list_empty(&timer->open_list_head) &&
+		if (list_empty(&timer->open_list_head) &&
 		    timer->hw.close)
 			timer->hw.close(timer);
 		/* remove slave links */
@@ -493,8 +492,7 @@ int snd_timer_start(struct snd_timer_ins
 	return result;
 }
 
-static int _snd_timer_stop(struct snd_timer_instance * timeri,
-			   int keep_flag, int event)
+static int _snd_timer_stop(struct snd_timer_instance *timeri, int event)
 {
 	struct snd_timer *timer;
 	unsigned long flags;
@@ -503,13 +501,11 @@ static int _snd_timer_stop(struct snd_ti
 		return -ENXIO;
 
 	if (timeri->flags & SNDRV_TIMER_IFLG_SLAVE) {
-		if (!keep_flag) {
-			spin_lock_irqsave(&slave_active_lock, flags);
-			timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
-			list_del_init(&timeri->ack_list);
-			list_del_init(&timeri->active_list);
-			spin_unlock_irqrestore(&slave_active_lock, flags);
-		}
+		spin_lock_irqsave(&slave_active_lock, flags);
+		timeri->flags &= ~SNDRV_TIMER_IFLG_RUNNING;
+		list_del_init(&timeri->ack_list);
+		list_del_init(&timeri->active_list);
+		spin_unlock_irqrestore(&slave_active_lock, flags);
 		goto __end;
 	}
 	timer = timeri->timer;
@@ -534,9 +530,7 @@ static int _snd_timer_stop(struct snd_ti
 			}
 		}
 	}
-	if (!keep_flag)
-		timeri->flags &=
-			~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
+	timeri->flags &= ~(SNDRV_TIMER_IFLG_RUNNING | SNDRV_TIMER_IFLG_START);
 	spin_unlock_irqrestore(&timer->lock, flags);
       __end:
 	if (event != SNDRV_TIMER_EVENT_RESOLUTION)
@@ -555,7 +549,7 @@ int snd_timer_stop(struct snd_timer_inst
 	unsigned long flags;
 	int err;
 
-	err = _snd_timer_stop(timeri, 0, SNDRV_TIMER_EVENT_STOP);
+	err = _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_STOP);
 	if (err < 0)
 		return err;
 	timer = timeri->timer;
@@ -601,7 +595,7 @@ int snd_timer_continue(struct snd_timer_
  */
 int snd_timer_pause(struct snd_timer_instance * timeri)
 {
-	return _snd_timer_stop(timeri, 0, SNDRV_TIMER_EVENT_PAUSE);
+	return _snd_timer_stop(timeri, SNDRV_TIMER_EVENT_PAUSE);
 }
 
 /*


Patches currently in stable-queue which might be from tiwai@suse.de are

queue-4.3/alsa-seq-fix-race-at-closing-in-virmidi-driver.patch
queue-4.3/alsa-hda-fix-bad-dereference-of-jack-object.patch
queue-4.3/c8sectpfe-remove-select-on-config_fw_loader_user_helper_fallback.patch
queue-4.3/alsa-usb-audio-add-quirk-for-microsoft-lifecam-hd-6000.patch
queue-4.3/alsa-rawmidi-remove-kernel-warning-for-null-user-space-buffer-check.patch
queue-4.3/alsa-usb-audio-fix-oppo-ha-1-vendor-id.patch
queue-4.3/alsa-timer-fix-race-at-concurrent-reads.patch
queue-4.3/alsa-hda-fix-static-checker-warning-in-patch_hdmi.c.patch
queue-4.3/alsa-seq-fix-lockdep-warnings-due-to-double-mutex-locks.patch
queue-4.3/alsa-usb-audio-fix-teac-ud-501-ud-503-nt-503-usb-delay.patch
queue-4.3/alsa-timer-fix-wrong-instance-passed-to-slave-callbacks.patch
queue-4.3/alsa-hda-implement-loopback-control-switch-for-realtek-and-other-codecs.patch
queue-4.3/alsa-seq-degrade-the-error-message-for-too-many-opens.patch
queue-4.3/alsa-timer-fix-race-between-stop-and-interrupt.patch
queue-4.3/alsa-compress-disable-get_codec_caps-ioctl-for-some-architectures.patch
queue-4.3/alsa-rawmidi-make-snd_rawmidi_transmit-race-free.patch
queue-4.3/alsa-hda-fix-speaker-output-from-vaio-aio-machines.patch
queue-4.3/alsa-timer-code-cleanup.patch
queue-4.3/alsa-bebob-use-a-signed-return-type-for-get_formation_index.patch
queue-4.3/alsa-dummy-implement-timer-backend-switching-more-safely.patch
queue-4.3/alsa-dummy-disable-switching-timer-backend-via-sysfs.patch
queue-4.3/alsa-seq-fix-incorrect-sanity-check-at-snd_seq_oss_synth_cleanup.patch
queue-4.3/alsa-seq-fix-yet-another-races-among-alsa-timer-accesses.patch
queue-4.3/alsa-usb-audio-avoid-freeing-umidi-object-twice.patch
queue-4.3/revert-alsa-hda-fix-noise-on-gigabyte-z170x-mobo.patch
queue-4.3/alsa-hda-add-fixup-for-mac-mini-7-1-model.patch
queue-4.3/alsa-usb-audio-add-native-dsd-support-for-ps-audio-nuwave-dac.patch
queue-4.3/alsa-timer-fix-leftover-link-at-closing.patch
queue-4.3/alsa-rawmidi-fix-race-at-copying-updating-the-position.patch
queue-4.3/alsa-pcm-fix-potential-deadlock-in-oss-emulation.patch
queue-4.3/alsa-timer-fix-link-corruption-due-to-double-start-or-stop.patch