On Thu, Sep 14, 2017 at 2:01 PM, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> 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@xxxxxxxxxxxxxxx # v4.13 > Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> > --- > drivers/gpu/drm/exynos/exynos_drm_drv.c | 4 ++++ > 1 file changed, 4 insertions(+) Acked-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx> Best regards, Krzysztof