On Thu, Sep 14, 2017 at 2:01 PM, Marek Szyprowski m.szyprowski@samsung.com wrote:
Commit 48a92916729b ("drm/exynos: use drm_for_each_connector_iter()") replaced unsafe drm_for_each_connector() with drm_for_each_connector_iter() and removed surrounding drm_modeset_lock calls. However, that lock was there not only to protect unsafe drm_for_each_connector(), but it was also required to be held by the dpms code which was called from the loop body. This patch restores those drm_modeset_lock calls to fix broken suspend and resume of Exynos DRM subsystem in v4.13 kernel.
Fixes: 48a92916729b ("drm/exynos: use drm_for_each_connector_iter()") CC: stable@vger.kernel.org # v4.13 Signed-off-by: Marek Szyprowski m.szyprowski@samsung.com
drivers/gpu/drm/exynos/exynos_drm_drv.c | 4 ++++ 1 file changed, 4 insertions(+)
Acked-by: Krzysztof Kozlowski krzk@kernel.org
Best regards, Krzysztof