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  1. 22 10月, 2015 1 次提交
  3. 07 9月, 2015 1 次提交
    • J
      ALSA: usb-audio: Change internal PCM order · 5ee20bc7
      由 Johan Rastén 提交于 
      New PCMs will now be added to the end of the chip's PCM list instead of to the
front. This changes the way streams are combined so that the first capture
stream will now be merged with the first playback stream instead of the last.

This fixes a problem with ASUS U7. Cards with one playback stream and cards
without capture streams should be unaffected by this change.

Exception added for M-Audio Audiophile USB (tm) since it seems to have a fix to
swap capture stream numbering in alsa-lib conf/cards/USB-audio.conf
Signed-off-by: NJohan Rastén <johan@oljud.se>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      5ee20bc7
  5. 06 9月, 2015 3 次提交
  7. 04 9月, 2015 2 次提交
  9. 03 9月, 2015 1 次提交
  11. 02 9月, 2015 2 次提交
  13. 30 8月, 2015 5 次提交
  15. 29 8月, 2015 14 次提交
  17. 28 8月, 2015 4 次提交
  19. 27 8月, 2015 2 次提交
  21. 26 8月, 2015 5 次提交
    • T
      ALSA: usb-audio: Handle normal and auto-suspend equally · 0662292a
      由 Takashi Iwai 提交于 
      In theory, the device may get suspended even at runtime PM suspend.
Currently we don't save the mixer state for autopm, and it may bring
inconsistency.

This patch removes the special handling for autosuspend.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      0662292a
    • T
      ALSA: usb-audio: Replace probing flag with active refcount · a6da499b
      由 Takashi Iwai 提交于 
      We can use active refcount for preventing autopm during probe.
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      a6da499b
    • T
      ALSA: usb-audio: Avoid nested autoresume calls · 47ab1545
      由 Takashi Iwai 提交于 
      After the recent fix of runtime PM for USB-audio driver, we got a
lockdep warning like:

  =============================================
  [ INFO: possible recursive locking detected ]
  4.2.0-rc8+ #61 Not tainted
  ---------------------------------------------
  pulseaudio/980 is trying to acquire lock:
   (&chip->shutdown_rwsem){.+.+.+}, at: [<ffffffffa0355dac>] snd_usb_autoresume+0x1d/0x52 [snd_usb_audio]
  but task is already holding lock:
   (&chip->shutdown_rwsem){.+.+.+}, at: [<ffffffffa0355dac>] snd_usb_autoresume+0x1d/0x52 [snd_usb_audio]

This comes from snd_usb_autoresume() invoking down_read() and it's
used in a nested way.  Although it's basically safe, per se (as these
are read locks), it's better to reduce such spurious warnings.

The read lock is needed to guarantee the execution of "shutdown"
(cleanup at disconnection) task after all concurrent tasks are
finished.  This can be implemented in another better way.

Also, the current check of chip->in_pm isn't good enough for
protecting the racy execution of multiple auto-resumes.

This patch rewrites the logic of snd_usb_autoresume() & co; namely,
- The recursive call of autopm is avoided by the new refcount,
  chip->active.  The chip->in_pm flag is removed accordingly.
- Instead of rwsem, another refcount, chip->usage_count, is introduced
  for tracking the period to delay the shutdown procedure.  At
  the last clear of this refcount, wake_up() to the shutdown waiter is
  called.
- The shutdown flag is replaced with shutdown atomic count; this is
  for reducing the lock.
- Two new helpers are introduced to simplify the management of these
  refcounts; snd_usb_lock_shutdown() increases the usage_count, checks
  the shutdown state, and does autoresume.  snd_usb_unlock_shutdown()
  does the opposite.  Most of mixer and other codes just need this,
  and simply returns an error if it receives an error from lock.

Fixes: 9003ebb1 ('ALSA: usb-audio: Fix runtime PM unbalance')
Reported-and-tested-by: NAlexnader Kuleshov <kuleshovmail@gmail.com>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      47ab1545
    • T
      ALSA: hda - Remove superfluous pcm NULL check · b25cf30a
      由 Takashi Iwai 提交于 
      The variable pcm can be never NULL since it was rewritten with
list_for_each_entry().
Suggested-by: NMarkus Osterhoff <linux-kernel@k-raum.org>
Signed-off-by: NTakashi Iwai <tiwai@suse.de>
      b25cf30a
    • K
      ASoC: rockchip: fix platform_no_drv_owner.cocci warnings · 1c0beb27
      由 kbuild test robot 提交于 
      sound/soc/rockchip/rockchip_rt5645.c:214:3-8: No need to set .owner here. The core will do it.

 Remove .owner field if calls are used which set it automatically

Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: NFengguang Wu <fengguang.wu@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>
      1c0beb27