From: Thomas Hellstrom <thellstrom@vmware.com>
Date: Tue, 18 Aug 2015 16:07:38 +0000 (-0700)
Subject: drm/vmwgfx: Fix a circular locking dependency in the fbdev code
X-Git-Tag: omap-for-v4.3/fixes-rc1~89^2~13^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=772269f970129a7b9b50d68684b2568a41850111;p=pandora-kernel.git

drm/vmwgfx: Fix a circular locking dependency in the fbdev code

When a user-space process writes directly to the fbdev framebuffer,
we hit a circular locking dependency. Fix this by introducing a local
delayed work callback so that the defio lock can be released before
calling into the modesetting code for a dirty update.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
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