[PATCH 23/29] drm/exynos: drop struct_mutex from exynos_gem_map_sgt_with_dma

The sg table isn't refcounted, there's no corresponding locking for unmapping and drm_map_sg is ok with being called concurrently. So drop the locking since it doesn't protect anything. Cc: Inki Dae Signed-off-by: Daniel Vetter --- drivers/gpu/drm/exynos/exynos_drm_gem.c | 4 1 file

[PATCH 23/29] drm/exynos: drop struct_mutex from exynos_gem_map_sgt_with_dma

Hi, On 23 November 2015 at 09:32, Daniel Vetter wrote: > The sg table isn't refcounted, there's no corresponding locking for > unmapping and drm_map_sg is ok with being called concurrently. > > So drop the locking since it doesn't protect anything. > > Cc: Inki Dae > Signed-off-by: Daniel