From: Takashi Iwai tiwai@suse.de
[ Upstream commit ca58f55108fee41d87c9123f85ad4863e5de7f45 ]
This is an alternative fix attemp for the issue reported in the commit caa8422d01e9 ("ALSA: hda: Flush interrupts on disabling") that was reverted later due to regressions. Instead of tweaking the hardware disablement order and the enforced irq flushing, do calling cancel_work_sync() of the unsol work early enough, and explicitly ignore the unsol events during the shutdown by checking the bus->shutdown flag.
Fixes: caa8422d01e9 ("ALSA: hda: Flush interrupts on disabling") Cc: Chris Wilson chris@chris-wilson.co.uk Link: https://lore.kernel.org/r/s5h1ruxt9cz.wl-tiwai@suse.de Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.org --- sound/pci/hda/hda_bind.c | 4 ++++ sound/pci/hda/hda_intel.c | 3 +++ 2 files changed, 7 insertions(+)
--- a/sound/pci/hda/hda_bind.c +++ b/sound/pci/hda/hda_bind.c @@ -42,6 +42,10 @@ static void hda_codec_unsol_event(struct { struct hda_codec *codec = container_of(dev, struct hda_codec, core);
+ /* ignore unsol events during shutdown */ + if (codec->bus->shutdown) + return; + if (codec->patch_ops.unsol_event) codec->patch_ops.unsol_event(codec, ev); } --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -1275,8 +1275,11 @@ static int azx_free(struct azx *chip) static int azx_dev_disconnect(struct snd_device *device) { struct azx *chip = device->device_data; + struct hdac_bus *bus = azx_bus(chip);
chip->bus.shutdown = 1; + cancel_work_sync(&bus->unsol_work); + return 0; }