tree 24ca4e2b335c1c82202751141f754cb21d084c10
parent e265d46203a6a01abb9824933dee5641f4aff428
author Krishna Manikandan <mkrishn@codeaurora.org> 1625723236 +0530
committer Gerrit - the friendly Code Review server <code-review@localhost> 1628680063 -0700

disp: msm: sde: add null check for drm file in msm_release

Drm file is not set to NULL after freeing it from drm
release. This can result in use-after-free issues in
some scenarios. Add a mutex lock and other proper null
checks to prevent such issues.

Change-Id: Ic35b0a76166b0f47a354b1737e6f4c3ac1437ed4
Signed-off-by: Nirmal Abraham <nabrah@codeaurora.org>
Signed-off-by: Althaf Neelanchirayil <aneelanc@codeaurora.org>
Signed-off-by: vbejawad <vbejawad@codeaurora.org>