Chris Wilson 15727ed0d9 drm/i915/fbdev: Check for existence of ifbdev->vma before operations ...

Commit fabef82562 ("drm/i915: Drop struct_mutex around frontbuffer
flushes") adds a dependency to ifbdev->vma when flushing the framebufer,
but the checks are only against the existence of the ifbdev->fb and not
against ifbdev->vma. This leaves a window of opportunity where we may
try to operate on the fbdev prior to it being probed (thanks to
asynchronous booting).

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101534
Fixes: fabef82562 ("drm/i915: Drop struct_mutex around frontbuffer flushes")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170622160211.783-1-chris@chris-wilson.co.uk
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Cc: stable@vger.kernel.org

2017-07-04 13:14:55 +01:00

..

drm

drm/i915/fbdev: Check for existence of ifbdev->vma before operations

2017-07-04 13:14:55 +01:00

host1x

gpu: host1x: select IOMMU_IOVA

2017-05-18 10:41:28 -04:00

ipu-v3

gpu: ipu-v3: don't depend on DRM being enabled

2017-04-04 10:58:56 +02:00

vga

Merge tag 'doc-4.11-images' of git://git.lwn.net/linux into drm-misc-next

2017-03-14 15:07:33 +01:00

Makefile

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