drm: Avoid NULL dereference for DRM_LEGACY debug message
authorChris Wilson <chris@chris-wilson.co.uk>
Sun, 27 Nov 2016 17:09:09 +0000 (17:09 +0000)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Mon, 28 Nov 2016 07:39:41 +0000 (08:39 +0100)
commita2ec1c132a593ac4f05eb8d02834c4675a4aea07
treef7b715f3efb8cde8211b6db1397a545195421dde
parent75df62478c84e101e0c4141e4e6c3ed10163de1f
drm: Avoid NULL dereference for DRM_LEGACY debug message

smatch warns:

drivers/gpu/drm/drm_lock.c:188 drm_legacy_lock() warn:
variable dereferenced before check 'master->lock.hw_lock' (see line 177)

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161127170910.29106-2-chris@chris-wilson.co.uk
drivers/gpu/drm/drm_lock.c