From c7a806d9ce6757ff56078674916e53bd859f242d Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Mon, 30 Jan 2023 23:15:40 +0900 Subject: 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 Fixes: 634ec0b2906e ("ALSA: firewire-motu: notify event for parameter change in register DSP model") Signed-off-by: Takashi Sakamoto Link: https://lore.kernel.org/r/20230130141540.102854-1-o-takashi@sakamocchi.jp Signed-off-by: Takashi Iwai --- sound/firewire/motu/motu-hwdep.c | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'sound/firewire') 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; -- cgit v1.2.3-70-g09d2