Some drivers (like Exynos mixer) calls drm_iommu_attach_device_if_possible
before registering crtc, so additional check for NULL crtc pointer is
required.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_drm_iommu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/exynos/exynos_drm_iommu.c b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
index d4ec7465e9cc..d4eb730ba254 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_iommu.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_iommu.c
@@ -151,7 +151,7 @@ int drm_iommu_attach_device_if_possible(struct exynos_drm_crtc *exynos_crtc,
int ret = 0;
if (is_drm_iommu_supported(drm_dev)) {
- if (exynos_crtc->ops->clear_channels)
+ if (exynos_crtc && exynos_crtc->ops->clear_channels)
exynos_crtc->ops->clear_channels(exynos_crtc);
return drm_iommu_attach_device(drm_dev, subdrv_dev);
}
--
1.9.2
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