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ALSA: hda - hdmi: Protect ELD buffer
authorDavid Henningsson <david.henningsson@canonical.com>
Tue, 19 Feb 2013 15:11:25 +0000 (16:11 +0100)
committerTakashi Iwai <tiwai@suse.de>
Tue, 19 Feb 2013 17:28:30 +0000 (18:28 +0100)
commit4bd038f9d80216a6e95c5c36fae5054a83ea75d7
treea2347fc3bb5bdbb84527858956667b9d9882ba0ctree | snapshot
parent1613d6b46b433f07f1d2703e4bd102802dcd75a4commit | diff
ALSA: hda - hdmi: Protect ELD buffer

Because the eld buffer can be simultaneously accessed from both
workqueue context (updating) and process context (kcontrol read),
we need to protect it with a mutex to guarantee consistency.

To avoid holding the mutex while reading the ELD info from the
codec, we introduce a temporary eld buffer.

Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
sound/pci/hda/hda_eld.c diff | blob | history
sound/pci/hda/hda_local.h diff | blob | history
sound/pci/hda/patch_hdmi.c diff | blob | history
Domain: System / Kernel;