[patch 13/46] ALSA: hda - Dont reset HP pinctl in patch_sigmatel.c

[Greg KH]

2.6.28-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Takashi Iwai <tiwai@xxxxxxx>

commit 8317e0b0c2234f5f1f5d54804e4093d11bc0dffa upstream.

Resetting HP pinctl at the unplugged state may cause a sort of regression
on some devices because of their wrong pin configuration.

A simple workaround is to disable the pin reset.  This is ugly and may be
not good from the power-saving POV (if any), but damn simple.

Signed-off-by: Takashi Iwai <tiwai@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
 sound/pci/hda/patch_sigmatel.c |   11 +++++++++++
 1 file changed, 11 insertions(+)

--- a/sound/pci/hda/patch_sigmatel.c
+++ b/sound/pci/hda/patch_sigmatel.c
@@ -3985,8 +3985,19 @@ static void stac92xx_hp_detect(struct hd
 			continue;
 		if (presence)
 			stac92xx_set_pinctl(codec, cfg->hp_pins[i], val);
+#if 0 /* FIXME */
+/* Resetting the pinctl like below may lead to (a sort of) regressions
+ * on some devices since they use the HP pin actually for line/speaker
+ * outs although the default pin config shows a different pin (that is
+ * wrong and useless).
+ *
+ * So, it's basically a problem of default pin configs, likely a BIOS issue.
+ * But, disabling the code below just works around it, and I'm too tired of
+ * bug reports with such devices...
+ */
 		else
 			stac92xx_reset_pinctl(codec, cfg->hp_pins[i], val);
+#endif /* FIXME */
 	}
 } 
 

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