If binding failed calling exynos_dp_enable in exynos_dp_resume will
result in several NULL pointer dereferences. It is much better to
simply skip suspend/resume handling if bind has failed, do so by
checking if a drm_dev exists.
Signed-off-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/exynos/exynos_dp_core.c | 6 ++++++
1 files changed, 6 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/exynos/exynos_dp_core.c b/drivers/gpu/drm/exynos/exynos_dp_core.c
index d66ade0..48baf07 100644
--- a/drivers/gpu/drm/exynos/exynos_dp_core.c
+++ b/drivers/gpu/drm/exynos/exynos_dp_core.c
@@ -1388,6 +1388,9 @@ static int exynos_dp_suspend(struct device *dev)
{
struct exynos_dp_device *dp = dev_get_drvdata(dev);
+ if (!dp->drm_dev)
+ return 0;
+
exynos_dp_disable(&dp->encoder);
return 0;
}
@@ -1396,6 +1399,9 @@ static int exynos_dp_resume(struct device *dev)
{
struct exynos_dp_device *dp = dev_get_drvdata(dev);
+ if (!dp->drm_dev)
+ return 0;
+
exynos_dp_enable(&dp->encoder);
return 0;
}
--
1.7.2.5
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