[alsa-devel] [PATCH] ALSA: Handle NULL jacks in snd_jack_report()

[Mark Brown]

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 at opensource.wolfsonmicro.com>
---
 sound/core/jack.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

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 @@ 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);
-- 
1.5.6.5