diff mbox

[1/3] bebob: Fix a missing to unlock mutex in error handling case

Message ID 1406038263-18558-1-git-send-email-o-takashi@sakamocchi.jp (mailing list archive)
State Accepted
Commit 901401166464dc1875825235bb2541af31b4c384
Delegated to: Takashi Iwai
Headers show

Commit Message

Takashi Sakamoto July 22, 2014, 2:11 p.m. UTC
In error handling case, special_clk_ctl_put() returns without unlock_mutex(),
therefore the mutex is still locked. This commit moves mutex_lock() after
the error handling case.

This commit is my solution for this post.

[PATCH -next] ALSA: bebob: Fix missing unlock on error in special_clk_ctl_put()
https://lkml.org/lkml/2014/7/20/12

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
---
 sound/firewire/bebob/bebob_maudio.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Takashi Iwai July 22, 2014, 2:26 p.m. UTC | #1
At Tue, 22 Jul 2014 23:11:03 +0900,
Takashi Sakamoto wrote:
> 
> In error handling case, special_clk_ctl_put() returns without unlock_mutex(),
> therefore the mutex is still locked. This commit moves mutex_lock() after
> the error handling case.
> 
> This commit is my solution for this post.
> 
> [PATCH -next] ALSA: bebob: Fix missing unlock on error in special_clk_ctl_put()
> https://lkml.org/lkml/2014/7/20/12
> 
> Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>

Thanks, applied all three patches now.

BTW, at the next time, put "v2" or such in the subject line so that
people can distinguish the new patch series from the previous ones.
You can use --subject-prefix option for git-format-patch or else.

Preferably, write the changes since the previous revision, too
(usually below the --- line, so that it's not merged into the git
 changelog; some people like to have them in the final commit,
 though.)

Last but not least, don't forget to put a proper subject prefix.
For ALSA codes, we put "ALSA:" prefix in the subject.  Study git
changelogs.


Takashi

> ---
>  sound/firewire/bebob/bebob_maudio.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/sound/firewire/bebob/bebob_maudio.c b/sound/firewire/bebob/bebob_maudio.c
> index 6af50eb..fc470c6 100644
> --- a/sound/firewire/bebob/bebob_maudio.c
> +++ b/sound/firewire/bebob/bebob_maudio.c
> @@ -379,12 +379,12 @@ static int special_clk_ctl_put(struct snd_kcontrol *kctl,
>  	struct special_params *params = bebob->maudio_special_quirk;
>  	int err, id;
>  
> -	mutex_lock(&bebob->mutex);
> -
>  	id = uval->value.enumerated.item[0];
>  	if (id >= ARRAY_SIZE(special_clk_labels))
>  		return 0;
>  
> +	mutex_lock(&bebob->mutex);
> +
>  	err = avc_maudio_set_special_clk(bebob, id,
>  					 params->dig_in_fmt,
>  					 params->dig_out_fmt,
> -- 
> 1.9.1
>
Takashi Sakamoto July 22, 2014, 3:23 p.m. UTC | #2
(Jul 22 2014 23:26), Takashi Iwai wrote:
> BTW, at the next time, put "v2" or such in the subject line so that
> people can distinguish the new patch series from the previous ones.
> You can use --subject-prefix option for git-format-patch or else.

In this time I newly revised these patches, thus there was a lack of
patches in previous series. I thought it better to post them as a new
series.

But I should have added v2 for the series as you indicate.

> Preferably, write the changes since the previous revision, too
> (usually below the --- line, so that it's not merged into the git
>  changelog; some people like to have them in the final commit,
>  though.)

OK.

> Last but not least, don't forget to put a proper subject prefix.
> For ALSA codes, we put "ALSA:" prefix in the subject.  Study git
> changelogs.

Next time, I remember to add the prefix. In my repository, I use the
prefix to distinguish my local patches from upstream patches. But I
should change this workflow.


Regards

Takashi Sakamoto
o-takashi@sakamocchi.jp
diff mbox

Patch

diff --git a/sound/firewire/bebob/bebob_maudio.c b/sound/firewire/bebob/bebob_maudio.c
index 6af50eb..fc470c6 100644
--- a/sound/firewire/bebob/bebob_maudio.c
+++ b/sound/firewire/bebob/bebob_maudio.c
@@ -379,12 +379,12 @@  static int special_clk_ctl_put(struct snd_kcontrol *kctl,
 	struct special_params *params = bebob->maudio_special_quirk;
 	int err, id;
 
-	mutex_lock(&bebob->mutex);
-
 	id = uval->value.enumerated.item[0];
 	if (id >= ARRAY_SIZE(special_clk_labels))
 		return 0;
 
+	mutex_lock(&bebob->mutex);
+
 	err = avc_maudio_set_special_clk(bebob, id,
 					 params->dig_in_fmt,
 					 params->dig_out_fmt,