tree a8f3849dafc67c77ff2652fc0655d57164e80a13
parent c2c3657f0aedb8736a0fb7b2b1985adfb86e7802
author Ranjani Sridharan <ranjani.sridharan@linux.intel.com> 1595977811 -0700
committer Takashi Iwai <tiwai@suse.de> 1596009289 +0200

ALSA: hda: fix NULL pointer dereference during suspend

When the ASoC card registration fails and the codec component driver
never probes, the codec device is not initialized and therefore
memory for codec->wcaps is not allocated. This results in a NULL pointer
dereference when the codec driver suspend callback is invoked during
system suspend. Fix this by returning without performing any actions
during codec suspend/resume if the card was not registered successfully.

Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Link: https://lore.kernel.org/r/20200728231011.1454066-1-ranjani.sridharan@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>