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| author | Takashi Iwai <tiwai@suse.de> | 2019-11-11 18:36:42 +0100 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2019-11-11 18:37:06 +0100 |
| commit | 0c4f09ceec3d7afbef6ad4077d96e36e0fad4028 (patch) | |
| tree | 56cbb236120a749c6533cb735f4caa3a7852bb69 /sound/core | |
| parent | ALSA: memalloc: Drop snd_dma_pci_data() macro (diff) | |
| download | linux-0c4f09ceec3d7afbef6ad4077d96e36e0fad4028.tar.xz linux-0c4f09ceec3d7afbef6ad4077d96e36e0fad4028.zip | |
ALSA: timer: Fix the breakage of slave link open
A silly mistake was made while applying the fix for potential races in
commit 6a34367e52ca ("ALSA: timer: Fix possible race at assigning a
timer instance"): when a slave PCM is opened and succeeds, it doesn't
return but proceeds to the master timer open code instead. Plug the
hole and beautify a bit.
Fixes: 6a34367e52ca ("ALSA: timer: Fix possible race at assigning a timer instance")
Reported-by: syzbot+4476917c053f60112c99@syzkaller.appspotmail.com
Link: https://lore.kernel.org/r/20191111173642.6093-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/core')
| -rw-r--r-- | sound/core/timer.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/sound/core/timer.c b/sound/core/timer.c index 9091030f4a89..24fed5c78273 100644 --- a/sound/core/timer.c +++ b/sound/core/timer.c @@ -268,8 +268,7 @@ int snd_timer_open(struct snd_timer_instance *timeri, list_add_tail(&timeri->open_list, &snd_timer_slave_list); num_slaves++; err = snd_timer_check_slave(timeri); - if (err < 0) - goto close; + goto list_added; } /* open a master instance */ @@ -324,7 +323,7 @@ int snd_timer_open(struct snd_timer_instance *timeri, list_add_tail(&timeri->open_list, &timer->open_list_head); timer->num_instances++; err = snd_timer_check_master(timeri); - close: +list_added: if (err < 0) snd_timer_close_locked(timeri, &card_dev_to_put); |