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ALSA: hda/hdmi - Read the pin sense from register when repolling

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commit 8c2e6728c2 upstream.

The driver will check the monitor presence when resuming from suspend,
starting poll or interrupt triggers. In these 3 situations, the
jack_dirty will be set to 1 first, then the hda_jack.c reads the
pin_sense from register, after reading the register, the jack_dirty
will be set to 0. But hdmi_repoll_work() is enabled in these 3
situations, It will read the pin_sense a couple of times subsequently,
since the jack_dirty is 0 now, It does not read the register anymore,
instead it uses the shadow pin_sense which is read at the first time.

It is meaningless to check the shadow pin_sense a couple of times,
we need to read the register to check the real plugging state, so
we set the jack_dirty to 1 in the hdmi_repoll_work().

Signed-off-by: Hui Wang <hui.wang@canonical.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hui Wang
2019-05-06 22:09:31 +08:00
committed by Greg Kroah-Hartman
parent bbad2d84bd
commit 02a6716ac4
1 changed files with 5 additions and 0 deletions
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5
sound/pci/hda/patch_hdmi.c
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@@ -1661,6 +1661,11 @@ static void hdmi_repoll_eld(struct work_struct *work)
container_of(to_delayed_work(work), struct hdmi_spec_per_pin, work);
struct hda_codec *codec = per_pin->codec;
struct hdmi_spec *spec = codec->spec;
struct hda_jack_tbl *jack;
jack = snd_hda_jack_tbl_get(codec, per_pin->pin_nid);
if (jack)
jack->jack_dirty = 1;
if (per_pin->repoll_count++ > 6)
per_pin->repoll_count = 0;