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drm/tegra: gem: Check before freeing CMA memory
authorThierry Reding <treding@nvidia.com>
Thu, 6 Nov 2014 13:41:31 +0000 (14:41 +0100)
committerThierry Reding <treding@nvidia.com>
Thu, 13 Nov 2014 15:18:34 +0000 (16:18 +0100)
commit7e0180e3570cc791e95e6b6cd5fbeb0aedc62776
treeb98d5c0e8033fdc37f98baa07a24e2d28b5eb459tree | snapshot (tar.gz zip)
parentcb10c81fdf8c77df4fffc8cb740ddf33427869dfcommit | diff
drm/tegra: gem: Check before freeing CMA memory

dma_free_writecombine() must not be called on a buffer that couldn't be
allocated. Check for a valid virtual address before attempting to free
the memory to avoid a crash.

Reported-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
drivers/gpu/drm/tegra/gem.c diff | blob | blame | history