[PATCH i-g-t 2/3] lib/kms: Use for_each_plane_format() for the msm scaler counting

[Ville Syrjala <ville.syrjala@linux.intel.com>]

From: Ville Syrjälä <ville.syrjala@linux.intel.com>

Currently the scaler counting loop iterates over the entire
format_mod blob format list. That list may contain a lot of duplicate
formats (one for each modifier supported with that format), so this
is a bit inefficient. Iterate the plane's format list instead which
has no duplicates.

Cc: Rob Clark <robdclark@chromium.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
---
 lib/igt_kms.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/lib/igt_kms.c b/lib/igt_kms.c
index 2d758b63c043..4cc7c06812c8 100644
--- a/lib/igt_kms.c
+++ b/lib/igt_kms.c
@@ -7504,10 +7504,11 @@ int igt_crtc_num_scalers(igt_crtc_t *crtc)
 		 * as a rough approximation of the # of scalars.. it may
 		 * undercount on some hw, but it will not overcount
 		 */
-		for_each_plane_on_crtc(crtc,
-				       plane) {
-			for (unsigned i = 0; i < plane->format_mod_count; i++) {
-				if (igt_format_is_yuv(plane->formats[i])) {
+		for_each_plane_on_crtc(crtc, plane) {
+			uint32_t format;
+
+			for_each_plane_format(plane, format) {
+				if (igt_format_is_yuv(format)) {
 					num_scalers++;
 					break;
 				}
-- 
2.52.0