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authorTakashi Sakamoto <o-takashi@sakamocchi.jp>2023-01-30 17:15:40 +0300
committerTakashi Iwai <tiwai@suse.de>2023-01-31 11:34:04 +0300
commitc7a806d9ce6757ff56078674916e53bd859f242d (patch)
tree176283250d168bba585ec4a0022548214db49671 /sound/firewire
parent4f876bfdb731a320089c5a64f8fa15fbba14418c (diff)
downloadlinux-c7a806d9ce6757ff56078674916e53bd859f242d.tar.xz
ALSA: firewire-motu: fix unreleased lock warning in hwdep device
Smatch static analysis tool detects that acquired lock is not released in hwdep device when condition branch is passed due to no event. It is unlikely to occur, while fulfilling is preferable for better coding. Reported-by: Dan Carpenter <error27@gmail.com> Fixes: 634ec0b2906e ("ALSA: firewire-motu: notify event for parameter change in register DSP model") Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp> Link: https://lore.kernel.org/r/20230130141540.102854-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/firewire')
-rw-r--r--sound/firewire/motu/motu-hwdep.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/firewire/motu/motu-hwdep.c b/sound/firewire/motu/motu-hwdep.c
index a900fc0e7644..88d1f4b56e4b 100644
--- a/sound/firewire/motu/motu-hwdep.c
+++ b/sound/firewire/motu/motu-hwdep.c
@@ -87,6 +87,10 @@ static long hwdep_read(struct snd_hwdep *hwdep, char __user *buf, long count,
return -EFAULT;
count = consumed;
+ } else {
+ spin_unlock_irq(&motu->lock);
+
+ count = 0;
}
return count;