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drm/exynos: fix NULL pointer reference 

There is a case called disable_plane callback function even if
plane->crtc is NULL from exynos_drm_encoder_disable and it will cause
NULL pointer reference error.

Signed-off-by: Joonyoung Shim <jy0922.shim@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Joonyoung Shim 2015-02-05 16:11:38 +09:00 committed by Inki Dae
parent d9ea62566d
commit 936ce5cce6
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/exynos/exynos_drm_encoder.c
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@ -102,7 +102,7 @@ static void exynos_drm_encoder_disable(struct drm_encoder *encoder)
/* all planes connected to this encoder should be also disabled. */
drm_for_each_legacy_plane(plane, &dev->mode_config.plane_list) {
if (plane->crtc == encoder->crtc)
if (plane->crtc && (plane->crtc == encoder->crtc))
plane->funcs->disable_plane(plane);
}
}