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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>
This commit is contained in:
Mark Brown 2008-10-15 17:07:47 +01:00 committed by Takashi Iwai
parent 428ffb7151
commit 9a3f371e99
1 changed files with 3 additions and 0 deletions
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3
sound/core/jack.c
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@ -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);