diff options
| author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2014-05-08 14:35:15 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <m.chehab@samsung.com> | 2014-05-23 15:50:17 -0300 |
| commit | 404a90abc60f60df2757cb272660e003d326881f (patch) | |
| tree | 1dcbe5e0ceafcce8182cd82b5e22683f3ba8cbf0 /drivers/media/platform/exynos4-is | |
| parent | f486e7c3cb9849b6a661931fa8c51a43d477046b (diff) | |
[media] exynos4-is: Free FIMC-IS CPU memory only when allocated
Ensure dma_free_coherent() is not called with incorrect arguments
and only when the memory was actually allocated. This will prevent
possible crashes on error paths of the top level media device driver,
when fimc-is device gets unregistered and its driver detached.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: stable@vger.kernel.org # for v3.15
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Diffstat (limited to 'drivers/media/platform/exynos4-is')
| -rw-r--r-- | drivers/media/platform/exynos4-is/fimc-is.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/media/platform/exynos4-is/fimc-is.c b/drivers/media/platform/exynos4-is/fimc-is.c index 128b73b6cce2..5476dce3ad29 100644 --- a/drivers/media/platform/exynos4-is/fimc-is.c +++ b/drivers/media/platform/exynos4-is/fimc-is.c @@ -367,6 +367,9 @@ static void fimc_is_free_cpu_memory(struct fimc_is *is) { struct device *dev = &is->pdev->dev; + if (is->memory.vaddr == NULL) + return; + dma_free_coherent(dev, is->memory.size, is->memory.vaddr, is->memory.paddr); } |