1 files changed, 19 insertions, 1 deletions

diff --git a/drivers/gpu/drm/stm/drv.c b/drivers/gpu/drm/stm/drv.c
index 8fe954c27fba..8bc7e8418b8d 100644
--- a/drivers/gpu/drm/stm/drv.c
+++ b/drivers/gpu/drm/stm/drv.c
@@ -31,6 +31,24 @@ static const struct drm_mode_config_funcs drv_mode_config_funcs = {
         .atomic_commit = drm_atomic_helper_commit,
 };
 
+static int stm_gem_cma_dumb_create(struct drm_file *file,
+                                   struct drm_device *dev,
+                                   struct drm_mode_create_dumb *args)
+{
+#ifdef CONFIG_MMU
+        unsigned int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8);
+
+        /*
+         * in order to optimize data transfer, pitch is aligned on
+         * 128 bytes, height is aligned on 4 bytes
+         */
+        args->pitch = roundup(min_pitch, 128);
+        args->height = roundup(args->height, 4);
+#endif
+
+        return drm_gem_cma_dumb_create_internal(file, dev, args);
+}
+
 DEFINE_DRM_GEM_CMA_FOPS(drv_driver_fops);
 
 static struct drm_driver drv_driver = {
@@ -44,7 +62,7 @@ static struct drm_driver drv_driver = {
         .minor = 0,
         .patchlevel = 0,
         .fops = &drv_driver_fops,
-        .dumb_create = drm_gem_cma_dumb_create,
+        .dumb_create = stm_gem_cma_dumb_create,
         .prime_handle_to_fd = drm_gem_prime_handle_to_fd,
         .prime_fd_to_handle = drm_gem_prime_fd_to_handle,
         .gem_free_object_unlocked = drm_gem_cma_free_object,