[PATCH AUTOSEL 5.4 11/26] ALSA: hda: Explicitly permit using autosuspend if runtime PM is supported

From: Sasha Levin
Date: Fri Apr 24 2020 - 08:23:46 EST


From: Roy Spliet <nouveau@xxxxxxxxxx>

[ Upstream commit 3ba21113bd33d49f3c300a23fc08cf114c434995 ]

This fixes runtime PM not working after a suspend-to-RAM cycle at least for
the codec-less HDA device found on NVIDIA GPUs.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207043
Signed-off-by: Roy Spliet <nouveau@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20200413082034.25166-7-tiwai@xxxxxxx
Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
sound/pci/hda/hda_intel.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index 4604d1e16150d..9f77713c36de6 100644
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2320,8 +2320,10 @@ static int azx_probe_continue(struct azx *chip)

set_default_power_save(chip);

- if (azx_has_pm_runtime(chip))
+ if (azx_has_pm_runtime(chip)) {
+ pm_runtime_use_autosuspend(&pci->dev);
pm_runtime_put_autosuspend(&pci->dev);
+ }

out_free:
if (err < 0) {
--
2.20.1