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authorTakashi Iwai <tiwai@suse.de>2015-08-24 10:52:06 +0200
committerTakashi Iwai <tiwai@suse.de>2015-08-25 07:59:02 +0200
commitc7cd0ef66aade29e37ee08821a0e195ee776c6e6 (patch)
tree3ea3e88cb85c6405f4562f78236cd55c89254f00 /sound/pci/hda/hda_generic.c
parentALSA: hda - Check all inputs for is_active_nid_for_any() (diff)
downloadlinux-c7cd0ef66aade29e37ee08821a0e195ee776c6e6.tar.xz
linux-c7cd0ef66aade29e37ee08821a0e195ee776c6e6.zip
ALSA: hda - Fix path power activation
The widget power-saving code tries to turn up/down the power of each widget in the I/O paths that are modified at each jack plug/unplug. The recent report revealed that the power activation leaves some widgets unpowered after plugging. This is because snd_hda_activate_path() turns on path->active flag at the end of the function while the path power management is done before that. Then it's regarded as if nothing is active, and the driver turns off the power. The fix is simply to set the flag at the beginning of the function, before trying to power up. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=102521 Cc: <stable@vger.kernel.org> [v4.1+] Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/hda_generic.c')
-rw-r--r--sound/pci/hda/hda_generic.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/sound/pci/hda/hda_generic.c b/sound/pci/hda/hda_generic.c
index 368181d8b0ce..24f91114a32c 100644
--- a/sound/pci/hda/hda_generic.c
+++ b/sound/pci/hda/hda_generic.c
@@ -884,8 +884,7 @@ void snd_hda_activate_path(struct hda_codec *codec, struct nid_path *path,
struct hda_gen_spec *spec = codec->spec;
int i;
- if (!enable)
- path->active = false;
+ path->active = enable;
/* make sure the widget is powered up */
if (enable && (spec->power_down_unused || codec->power_save_node))
@@ -903,9 +902,6 @@ void snd_hda_activate_path(struct hda_codec *codec, struct nid_path *path,
if (has_amp_out(codec, path, i))
activate_amp_out(codec, path, i, enable);
}
-
- if (enable)
- path->active = true;
}
EXPORT_SYMBOL_GPL(snd_hda_activate_path);