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authorMark Brown <broonie@opensource.wolfsonmicro.com>2008-10-15 17:07:47 +0100
committerTakashi Iwai <tiwai@suse.de>2008-10-16 08:40:03 +0200
commit9a3f371e9962749e5bdcf45a3bebdba555651a2b (patch)
tree4c755f3a7fa62fc3618c6b9f384dad663698eb2b
parent428ffb7151a4078994b5c01ecbf845954843c1ec (diff)
ALSA: Handle NULL jacks in snd_jack_report()
Facilitate drivers that wish to carry on if they can't create a jack input device by handling attempts to report the state of a NULL jack, removing the need to check for initialisation before use. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/core/jack.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/core/jack.c b/sound/core/jack.c
index 8133a2b173a5..bd2d9e6b55e9 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -147,6 +147,9 @@ EXPORT_SYMBOL(snd_jack_set_parent);
*/
void snd_jack_report(struct snd_jack *jack, int status)
{
+ if (!jack)
+ return;
+
if (jack->type & SND_JACK_HEADPHONE)
input_report_switch(jack->input_dev, SW_HEADPHONE_INSERT,
status & SND_JACK_HEADPHONE);

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