tree 39b96490d0d103e54602c3bb8d202f386b934c28
parent 2d1cb7f658fb9c3ba8f9dab8aca297d4dfdec835
author U. Artie Eoff <ullysses.a.eoff@intel.com> 1438115396 -0700
committer Takashi Iwai <tiwai@suse.de> 1438191446 +0200

ALSA: hda - Fix race between PM ops and HDA init/probe

PM ops could be triggered before HDA is done initializing
and cause PM to set HDA controller to D3Hot.  This can result
in "CORB reset timeout#2, CORBRP = 65535" and "no codecs
initialized".  Additionally, PM ops can be triggered before
azx_probe_continue finishes (async probe).  This can result
in a NULL deref kernel crash.

To fix this, avoid PM ops if !chip->running.

Signed-off-by: U. Artie Eoff <ullysses.a.eoff@intel.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>