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drm/exynos: Fix potential NULL pointer dereference in exynos_drm_encoder.c

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Check overlay_ops is not NULL as checked in the previous 'if' condition.
Fixes the following smatch error:
drivers/gpu/drm/exynos/exynos_drm_encoder.c:509 exynos_drm_encoder_plane_disable()
error: we previously assumed 'overlay_ops' could be null (see line 499)

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
This commit is contained in:
Sachin Kamat 2012-11-19 14:50:30 +05:30 committed by Inki Dae
parent 6ecf18f9e7
commit fdd66e06ce
1 changed files with 1 additions and 1 deletions
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drivers/gpu/drm/exynos/exynos_drm_encoder.c
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@ -513,6 +513,6 @@ void exynos_drm_encoder_plane_disable(struct drm_encoder *encoder, void *data)
* because the setting for disabling the overlay will be updated
* at vsync.
*/
if (overlay_ops->wait_for_vblank)
if (overlay_ops && overlay_ops->wait_for_vblank)
overlay_ops->wait_for_vblank(manager->dev);
}