drm/nouveau: make cursor_set implementation consistent with other drivers

When xorg state tracker wants to hide the cursor it calls set_cursor
with NULL buffer_handle and size=0x0, but nouveau refuses to hide it
because size is not 64x64... which is a bit odd. Both radeon and intel
check buffer_handle before validating size of cursor, so make nouveau
implementation consistent with them.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

1 files changed, 3 insertions, 3 deletions

diff --git a/drivers/gpu/drm/nouveau/nv04_crtc.c b/drivers/gpu/drm/nouveau/nv04_crtc.c
index cc3cd175ab9d..3c78bc81357e 100644
--- a/drivers/gpu/drm/nouveau/nv04_crtc.c
+++ b/drivers/gpu/drm/nouveau/nv04_crtc.c
@@ -943,14 +943,14 @@ nv04_crtc_cursor_set(struct drm_crtc *crtc, struct drm_file *file_priv,
         struct drm_gem_object *gem;
         int ret = 0;
 
-        if (width != 64 || height != 64)
-                return -EINVAL;
-
         if (!buffer_handle) {
                 nv_crtc->cursor.hide(nv_crtc, true);
                 return 0;
         }
 
+        if (width != 64 || height != 64)
+                return -EINVAL;
+
         gem = drm_gem_object_lookup(dev, file_priv, buffer_handle);
         if (!gem)
                 return -ENOENT;