tree 7b55244a1c3eef7552f614a59a0124400c07f872
parent 4ff49238888bc06f597d46d591b44dd6e983338e
author Ujwal Patel <ujwalp@codeaurora.org> 1382509486 -0700
committer Ujwal Patel <ujwalp@codeaurora.org> 1383004356 -0700

msm: mdss: Fix race condition during device shutdown

During device shutdown or restart, two separate contexts can call
mdss_fb_release. One system shutdown/restart thread which calls
shutdown routine registered through device driver. Other closing
of frame buffer devices from user processes. Fix race condition
between these two contexts by using proper locking mechanism and
releasing all the resources.

Change-Id: I583b0f1273d984215e276daf3b6307f3b6e9e8c6
Signed-off-by: Ujwal Patel <ujwalp@codeaurora.org>