ALSA: hda/hdmi - Read the pin sense from register when repolling
authorHui Wang <hui.wang@canonical.com>
Mon, 6 May 2019 14:09:31 +0000 (22:09 +0800)
committerTakashi Iwai <tiwai@suse.de>
Mon, 6 May 2019 14:29:05 +0000 (16:29 +0200)
commit8c2e6728c2bf95765b724e07d0278ae97cd1ee0d
treebcbdf570b1d49595fee15382e835934ad318a830
parentd81645510ce2a140816c4cb37c45b78d810ca63f
ALSA: hda/hdmi - Read the pin sense from register when repolling

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>
sound/pci/hda/patch_hdmi.c