[PATCH] ALSA: hda: Disable runtime resume at shutdown

[PATCH] ALSA: hda: Disable runtime resume at shutdown

[Takashi Iwai]

Although we modified the codec shutdown callback to perform
runtime-suspend, it's still not fully effective, as this may be
resumed again at any time later.

For fixing such an unwanted resume, this patch replaces
pm_runtime_suspend() with pm_runtime_force_suspend(), and call
pm_runtime_disable() afterward.  It assures to keep the device
suspended.

Also for code simplification, we apply the code unconditionally; when
it's been already suspended, nothing would happen by calls of
snd_pcm_suspend_all() and pm_runtime_force_suspend(), just proceed to
pm_runtime_disable().

Fixes: b98444ed597d ("ALSA: hda: Suspend codec at shutdown")
Reported-and-tested-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
---
 sound/pci/hda/hda_codec.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/sound/pci/hda/hda_codec.c b/sound/pci/hda/hda_codec.c
index 2c91c92c9ab2..a9ebefd60cf6 100644
--- a/sound/pci/hda/hda_codec.c
+++ b/sound/pci/hda/hda_codec.c
@@ -2986,13 +2986,11 @@ void snd_hda_codec_shutdown(struct hda_codec *codec)
 {
 	struct hda_pcm *cpcm;
 
-	if (pm_runtime_suspended(hda_codec_dev(codec)))
-		return;
-
 	list_for_each_entry(cpcm, &codec->pcm_list_head, list)
 		snd_pcm_suspend_all(cpcm->pcm);
 
-	pm_runtime_suspend(hda_codec_dev(codec));
+	pm_runtime_force_suspend(hda_codec_dev(codec));
+	pm_runtime_disable(hda_codec_dev(codec));
 }
 
 /*
-- 
2.31.1