diff options
| author | Julia Lawall <julia@diku.dk> | 2009-10-17 08:32:56 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2009-10-19 16:12:35 +0100 |
| commit | 4f066173fe8deb8874f41917e5d26ea2e0c46e3b (patch) | |
| tree | 95bffc1d1120c0fb65b932416f6c95ac319c3589 /sound/soc/soc-jack.c | |
| parent | 8d567b6b441bfcc20e8cbebc0dc376b2e280cd88 (diff) | |
ASoC: Move dereference after NULL test
If the NULL test on jack is needed, then the derefernce should be after the
NULL test.
A simplified version of the semantic match that detects this problem is as
follows (http://coccinelle.lip6.fr/):
// <smpl>
@match exists@
expression x, E;
identifier fld;
@@
* x->fld
... when != \(x = E\|&x\)
* x == NULL
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/soc-jack.c')
| -rw-r--r-- | sound/soc/soc-jack.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sound/soc/soc-jack.c b/sound/soc/soc-jack.c index 1d455ab79490..12124149601e 100644 --- a/sound/soc/soc-jack.c +++ b/sound/soc/soc-jack.c @@ -58,7 +58,7 @@ EXPORT_SYMBOL_GPL(snd_soc_jack_new); */ void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask) { - struct snd_soc_codec *codec = jack->card->codec; + struct snd_soc_codec *codec; struct snd_soc_jack_pin *pin; int enable; int oldstatus; @@ -67,6 +67,7 @@ void snd_soc_jack_report(struct snd_soc_jack *jack, int status, int mask) WARN_ON_ONCE(!jack); return; } + codec = jack->card->codec; mutex_lock(&codec->mutex); |