aboutsummaryrefslogtreecommitdiff
path: root/sound/pci
diff options
context:
space:
mode:
authorFrederik Deweerdt <deweerdt@free.fr>2008-04-14 13:11:44 +0200
committerTakashi Iwai <tiwai@suse.de>2008-04-24 12:00:33 +0200
commiteaa9985b4edb5f8008998abdda8b85ddeba05f1f (patch)
treebceda3f2b49f9d17d5bf954045412af6940d9281 /sound/pci
parent66c9aa6043798197e1760eaf4c5f510d6c69b95a (diff)
downloadlinux-eaa9985b4edb5f8008998abdda8b85ddeba05f1f.tar.gz
[ALSA] hda-codec - Fix unbalanced mutex
On Wed, Apr 02, 2008 at 08:19:29AM -0400, Miles Lane wrote: > [ 48.765906] [ BUG: bad unlock balance detected! ] > [ 48.765912] ------------------------------------- > [ 48.765918] pulseaudio/4277 is trying to release lock > (&codec->spdif_mutex) at: > [ 48.765930] [<c03031b7>] mutex_unlock+0x8/0xa > [ 48.765945] but there are no more locks to release! > [ 48.765950] > [ 48.765952] other info that might help us debug this: > [ 48.765959] 2 locks held by pulseaudio/4277: > [ 48.765965] #0: (&pcm->open_mutex){--..}, at: [<f89f134b>] > snd_pcm_open+0xc1/0x1ba [snd_pcm] > [ 48.766003] #1: (&chip->open_mutex){--..}, at: [<f8b4f13d>] > azx_pcm_open+0x36/0x184 [snd_hda_intel] > [ 48.766057] > [ 48.766059] stack backtrace: > [ 48.766066] Pid: 4277, comm: pulseaudio Not tainted 2.6.25-rc8-mm1 #12 > [ 48.766086] [<c013afc6>] print_unlock_inbalance_bug+0xce/0xd8 > [ 48.766107] [<c0109e1c>] ? save_stack_trace+0x1d/0x3b > [ 48.766130] [<c012f54e>] ? __kernel_text_address+0x1b/0x27 > [ 48.766146] [<c0104533>] ? dump_trace+0xcd/0xd9 > [ 48.766160] [<c0109d9e>] ? save_stack_address+0x0/0x2c > [ 48.766176] [<c013b80a>] ? find_usage_backwards+0xa4/0xc3 > [ 48.766193] [<c013cfb5>] lock_release_non_nested+0x84/0x120 > [ 48.766209] [<c03031b7>] ? mutex_unlock+0x8/0xa > [ 48.766222] [<c013d1bb>] lock_release+0x16a/0x199 > [ 48.766238] [<c0303137>] __mutex_unlock_slowpath+0xa9/0x121 > [ 48.766252] [<c03031b7>] mutex_unlock+0x8/0xa > [ 48.766263] [<f8b4ffd8>] snd_hda_multi_out_analog_open+0xd3/0xef > [snd_hda_intel] The following patch should fix it. Cc: "Miles Lane" <miles.lane@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci')
-rw-r--r--sound/pci/hda/hda_codec.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 689d177c17b..a6be6e3e871 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2665,8 +2665,8 @@ int snd_hda_multi_out_analog_open(struct hda_codec *codec,
if (mout->spdif_maxbps < hinfo->maxbps)
hinfo->maxbps = mout->spdif_maxbps;
}
+ mutex_unlock(&codec->spdif_mutex);
}
- mutex_unlock(&codec->spdif_mutex);
return snd_pcm_hw_constraint_step(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_CHANNELS, 2);
}