Since we're doing this outside of a spinlock to provide the necessary barriers, add an explicit barrier. Signed-off-by: Thomas Hellstrom <thellstrom@xxxxxxxxxx> --- drivers/gpu/drm/ttm/ttm_bo.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/drivers/gpu/drm/ttm/ttm_bo.c b/drivers/gpu/drm/ttm/ttm_bo.c index f561eea..a32fe41 100644 --- a/drivers/gpu/drm/ttm/ttm_bo.c +++ b/drivers/gpu/drm/ttm/ttm_bo.c @@ -37,6 +37,7 @@ #include <linux/mm.h> #include <linux/file.h> #include <linux/module.h> +#include <asm/atomic.h> #define TTM_ASSERT_LOCKED(param) #define TTM_DEBUG(fmt, arg...) @@ -444,6 +445,11 @@ static void ttm_bo_cleanup_memtype_use(struct ttm_buffer_object *bo) ttm_bo_mem_put(bo, &bo->mem); atomic_set(&bo->reserved, 0); + + /* + * Make processes trying to reserve really pick it up. + */ + smp_mb__after_atomic_dec(); wake_up_all(&bo->event_queue); } -- 1.6.2.5 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
