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drm/vc4: Fix double destroy of the BO cache on teardown.

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It's also destroyed from the top level vc4_drv.c initialization, which
is where the cache was actually initialized from.

This used to just involve duplicate del_timer() and cancel_work_sync()
being called, but it started causing kmalloc issues once we
double-freed the new BO label array.

Fixes: 1908a876f909 ("drm/vc4: Add an ioctl for labeling GEM BOs for summary stats")
Signed-off-by: Eric Anholt <eric@anholt.net>
Link: https://patchwork.freedesktop.org/patch/msgid/20170802203242.12815-1-eric@anholt.net
Tested-by: Noralf Trønnes <noralf@tronnes.org>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com>
This commit is contained in:
Eric Anholt 2017-08-02 13:32:40 -07:00
parent 16fece0153
commit 2aee7c5db7
1 changed files with 0 additions and 2 deletions
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2
drivers/gpu/drm/vc4/vc4_gem.c
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@ -1117,6 +1117,4 @@ vc4_gem_destroy(struct drm_device *dev)
if (vc4->hang_state)
vc4_free_hang_state(dev, vc4->hang_state);
vc4_bo_cache_destroy(dev);
}