Thread (23 messages) flat view 23 messages, 8 authors, 2020-03-27

Re: [PATCH 7/8] ALSA: firewire-tascam: Add missing annotation for tscm_hwdep_read_queue()

From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Date: 2020-03-11 03:27:00
Also in: alsa-devel, bpf, lkml

On Wed, Mar 11, 2020 at 01:09:07AM +0000, Jules Irenge wrote:
Sparse reports a warning at tscm_hwdep_read_queue()

warning: context imbalance in tscm_hwdep_read_queue() - unexpected unlock

The root cause is the missing annotation at tscm_hwdep_read_queue()
Add the missing __releases(&tscm->lock) annotation

Signed-off-by: Jules Irenge <redacted>
---
 sound/firewire/tascam/tascam-hwdep.c | 1 +
 1 file changed, 1 insertion(+)
 
This looks good.

Acked-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
quoted hunk ↗ jump to hunk
diff --git a/sound/firewire/tascam/tascam-hwdep.c b/sound/firewire/tascam/tascam-hwdep.c
index c29a97f6f638..9801e33e7f2a 100644
--- a/sound/firewire/tascam/tascam-hwdep.c
+++ b/sound/firewire/tascam/tascam-hwdep.c
@@ -36,6 +36,7 @@ static long tscm_hwdep_read_locked(struct snd_tscm *tscm, char __user *buf,
 
 static long tscm_hwdep_read_queue(struct snd_tscm *tscm, char __user *buf,
 				  long remained, loff_t *offset)
+	__releases(&tscm->lock)
 {
 	char __user *pos = buf;
 	unsigned int type = SNDRV_FIREWIRE_EVENT_TASCAM_CONTROL;
-- 
2.24.1

Regards

Takashi Sakamoto
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