drm: Replace drm_format_num_planes() with fb->format->num_planes

Replace drm_format_num_planes(fb->pixel_format) with just
fb->format->num_planes. Avoids the expensive format info lookup.

@@
struct drm_framebuffer *a;
struct drm_framebuffer b;
@@
(
- drm_format_num_planes(a->pixel_format)
+ a->format->num_planes
|
- drm_format_num_planes(b.pixel_format)
+ b.format->num_planes
)

@@
struct drm_plane_state *a;
struct drm_plane_state b;
@@
(
- drm_format_num_planes(a->fb->pixel_format)
+ a->fb->format->num_planes
|
- drm_format_num_planes(b.fb->pixel_format)
+ b.fb->format->num_planes
)

@@
struct drm_framebuffer *a;
identifier T;
@@
  T = a->pixel_format
<+...
- drm_format_num_planes(T)
+ a->format->num_planes
...+>

@@
struct drm_framebuffer b;
identifier T;
@@
  T = b.pixel_format
<+...
- drm_format_num_planes(T)
+ b.format->num_planes
...+>

v2: Rerun spatch due to code changes

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1481751022-18015-1-git-send-email-ville.syrjala@linux.intel.com

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index a760814ec974..8e3ad9afbe30 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -2497,7 +2497,7 @@ intel_fill_fb_info(struct drm_i915_private *dev_priv,
 	u32 gtt_offset_rotated = 0;
 	unsigned int max_size = 0;
 	uint32_t format = fb->pixel_format;
-	int i, num_planes = drm_format_num_planes(format);
+	int i, num_planes = fb->format->num_planes;
 	unsigned int tile_size = intel_tile_size(dev_priv);
 
 	for (i = 0; i < num_planes; i++) {