tree f01f76bd471332308d6e7c22af6310386437d121
parent 41814cfc01b059df33011d929837558c22f3c0e0
author Stanley.Miao <stanley.miao@windriver.com> 1283483028 +0200
committer Tomi Valkeinen <tomi.valkeinen@nokia.com> 1287778874 +0300

OMAP: DSS2: don't power off a panel twice

If we blank the panel by
echo 1 > /sys/devices/platform/omapfb/graphics/fb0/blank

Then, we reboot the sytem, the kernel will crash at
drivers/video/omap2/dss/core.c:323

This is because the panel is closed twice. Now check the state of a dssdev
to forbid a panel is power on or power off twice.

Signed-off-by: Stanley.Miao <stanley.miao@windriver.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>