Kai Vehmanen 0c0fe9e6b9 ALSA: hda: hdmi - fix kernel oops caused by invalid PCM idx
Add additional check in hdmi_find_pcm_slot() to not return
a pcm index that points to unallocated pcm. This could happen
if codec driver is set up in codec->mst_no_extra_pcms mode.
On some platforms, this leads to a kernel oops in snd_ctl_notify(),
called via update_eld().

BugLink: https://github.com/thesofproject/linux/issues/1536
Fixes: 5398e94fb753 ALSA: hda - Add DP-MST support for NVIDIA codecs
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20191129143756.23941-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2019-11-29 15:41:35 +01:00
..
2019-10-08 13:47:20 +01:00
2019-11-25 14:27:41 +01:00
2019-07-08 14:45:34 +02:00
2019-08-08 08:18:32 +02:00