Commit e3509ff0 authored Jun 03, 2009 by Daniel Mack Committed by Mark Brown Jun 04, 2009

ASoC: fix NULL pointer dereference in soc_suspend()



In case the initalization of an soc_device failed, there is no codec
associated with it. soc_suspend() will still dereference the pointer
and cause an Ooops when entering the sleep mode.

This happens on our board with a multi-target kernel image when booted
on a machine without audio circuits.

This patch makes the code bail out very early in this special case.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

parent d08664fd

sound/soc/soc-core.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -628,6 +628,12 @@ static int soc_suspend(struct platform_device *pdev, pm_message_t state)
		struct snd_soc_codec *codec = card->codec;
		int i;

		/* If the initialization of this soc device failed, there is no codec
		* associated with it. Just bail out in this case.
		*/
		if (!codec)
		return 0;

		/* Due to the resume being scheduled into a workqueue we could
		* suspend before that's finished - wait for it to complete.
		*/