ALSA: hda: Make device usage_count consistent across subsequent probing
authorCezary Rojewski <cezary.rojewski@intel.com>
Wed, 6 Jul 2022 12:02:24 +0000 (14:02 +0200)
committerTakashi Iwai <tiwai@suse.de>
Sat, 9 Jul 2022 16:37:25 +0000 (18:37 +0200)
commit9c76958b396a1342f08f205c350447b4bb54b26a
treeae1e24b7fef5c26ebd89e7c694a1e1ecec19d39c
parent0fcc43e2e159f2f609686a5339093177f019ae26
ALSA: hda: Make device usage_count consistent across subsequent probing

AVS HDAudio bus driver does not tie with codec drivers tighly and
snd_hda_codec_device_new() can be called after codec's module reload. In
such case, rpm is forbidden and invoking pm_runtime_forbid()
unconditionally causes device's usage_count to become unbalanced. This
is later caught by WARN_ON() found in sound/soc/hda.c. Detect such
circumstance and bump the usage_count instead.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20220706120230.427296-4-cezary.rojewski@intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/hda_codec.c