Hi,
On 2015년 09월 28일 01:11, Charles Keepax wrote:
> 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.
Thanks for your patch. However, the pm interfaces of KMS drivers aren't
required because these are controlled by top of Exynos drm driver and
connector dpms. So I posted a patch that it removes pm interfaces of dp
driver.
Thanks,
Inki Dae
>
> 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;
> }
>
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