drm: use memchr_inv()
authorAkinobu Mita <akinobu.mita@gmail.com>
Fri, 9 Nov 2012 12:10:42 +0000 (12:10 +0000)
committerDave Airlie <airlied@redhat.com>
Tue, 20 Nov 2012 06:06:17 +0000 (16:06 +1000)
Use memchr_inv() to check the specified memory region is filled with zero.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

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