commit 9a3f371e9962749e5bdcf45a3bebdba555651a2b
author Mark Brown <broonie@opensource.wolfsonmicro.com> Wed Oct 15 17:07:47 2008 +0100
committer Takashi Iwai <tiwai@suse.de> Thu Oct 16 08:40:03 2008 +0200
tree 4c755f3a7fa62fc3618c6b9f384dad663698eb2b
parent 428ffb7151a4078994b5c01ecbf845954843c1ec

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>

sound/core/jack.c

diff --git a/sound/core/jack.c b/sound/core/jack.c
index 8133a2b..bd2d9e6 100644
--- a/sound/core/jack.c
+++ b/sound/core/jack.c
@@ -147,6 +147,9 @@
  */
 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);