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ALSA: hda - Fix regression of monitor_present flag in eld proc file 

The commit [bd48128539ab: ALSA: hda - Fix forgotten HDMI
monitor_present update] covered the missing update of monitor_present
flag, but this caused a regression for devices without the i915 eld
notifier.  Since the old code supposed that pin_eld->monitor_present
was updated by the caller side, the hdmi_present_sense_via_verbs()
doesn't update the temporary eld->monitor_present but only
pin_eld->monitor_present, which is now overridden in update_eld().

The fix is to update pin_eld->monitor_present as well before calling
update_eld().

Note that this may still leave monitor_present flag in an inconsistent
state when the driver repolls, but this is at least the old behavior.
More proper fix will follow in the later patch.

Fixes: bd48128539 ('ALSA: hda - Fix forgotten HDMI monitor_present update')
Signed-off-by: Hyungwon Hwang <hyungwon.hwang7@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Hyungwon Hwang 2016-04-13 09:27:39 +09:00 committed by Takashi Iwai
parent adcdd0d5a1
commit 023d8218ec
1 changed files with 2 additions and 0 deletions
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2
sound/pci/hda/patch_hdmi.c
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@ -1414,6 +1414,8 @@ static bool hdmi_present_sense_via_verbs(struct hdmi_spec_per_pin *per_pin,
mutex_lock(&per_pin->lock);
pin_eld->monitor_present = !!(present & AC_PINSENSE_PRESENCE);
eld->monitor_present = pin_eld->monitor_present;
if (pin_eld->monitor_present)
eld->eld_valid = !!(present & AC_PINSENSE_ELDV);
else