drm/i915: fix a sprite watermark computation to avoid divide by zero if xpos<0
authorHai Lan <hai.lan@intel.com>
Wed, 15 Feb 2012 11:07:02 +0000 (19:07 +0800)
committerJesse Barnes <jbarnes@virtuousgeek.org>
Thu, 23 Feb 2012 16:56:40 +0000 (08:56 -0800)
commit4e9bb47bd29e02f2daaa7bdb2a8ddf977bf76f06
treea6067cdb859c1baee586136bbb43c7c822a66b79
parent5ca0c34ae28344b6b4ca3036bc82f89c8db16a59
drm/i915: fix a sprite watermark computation to avoid divide by zero if xpos<0

When setting overlay position with x<0, it will divide 0 and make drm
driver crash.

Signed-off-by: Hai Lan <hai.lan@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
drivers/gpu/drm/i915/intel_display.c