[PATCH 3/4] drm: Add "prefix" parameter to drm_rect_debug_print()

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From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

Allow the caller to specify a "prefix" string to drm_rect_debug_print()
to make it easier to see which drm_rect is being printed.

Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/drm_rect.c          | 7 ++++---
 drivers/gpu/drm/i915/intel_sprite.c | 8 ++++----
 include/drm/drm_rect.h              | 3 ++-
 3 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/drivers/gpu/drm/drm_rect.c b/drivers/gpu/drm/drm_rect.c
index 531ac4c..a8e2c86 100644
--- a/drivers/gpu/drm/drm_rect.c
+++ b/drivers/gpu/drm/drm_rect.c
@@ -275,22 +275,23 @@ EXPORT_SYMBOL(drm_rect_calc_vscale_relaxed);
 
 /**
  * drm_rect_debug_print - print the rectangle information
+ * @prefix: prefix string
  * @r: rectangle to print
  * @fixed_point: rectangle is in 16.16 fixed point format
  */
-void drm_rect_debug_print(const struct drm_rect *r, bool fixed_point)
+void drm_rect_debug_print(const char *prefix, const struct drm_rect *r, bool fixed_point)
 {
 	int w = drm_rect_width(r);
 	int h = drm_rect_height(r);
 
 	if (fixed_point)
-		DRM_DEBUG_KMS("%d.%06ux%d.%06u%+d.%06u%+d.%06u\n",
+		DRM_DEBUG_KMS("%s%d.%06ux%d.%06u%+d.%06u%+d.%06u\n", prefix,
 			      w >> 16, ((w & 0xffff) * 15625) >> 10,
 			      h >> 16, ((h & 0xffff) * 15625) >> 10,
 			      r->x1 >> 16, ((r->x1 & 0xffff) * 15625) >> 10,
 			      r->y1 >> 16, ((r->y1 & 0xffff) * 15625) >> 10);
 	else
-		DRM_DEBUG_KMS("%dx%d%+d%+d\n", w, h, r->x1, r->y1);
+		DRM_DEBUG_KMS("%s%dx%d%+d%+d\n", prefix, w, h, r->x1, r->y1);
 }
 EXPORT_SYMBOL(drm_rect_debug_print);
 
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index a2c15f8..2b96f33 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -817,8 +817,8 @@ intel_check_sprite_plane(struct drm_plane *plane,
 		hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale);
 		if (hscale < 0) {
 			DRM_DEBUG_KMS("Horizontal scaling factor out of limits\n");
-			drm_rect_debug_print(src, true);
-			drm_rect_debug_print(dst, false);
+			drm_rect_debug_print("src: ", src, true);
+			drm_rect_debug_print("dst: ", dst, false);
 
 			return hscale;
 		}
@@ -826,8 +826,8 @@ intel_check_sprite_plane(struct drm_plane *plane,
 		vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale);
 		if (vscale < 0) {
 			DRM_DEBUG_KMS("Vertical scaling factor out of limits\n");
-			drm_rect_debug_print(src, true);
-			drm_rect_debug_print(dst, false);
+			drm_rect_debug_print("src: ", src, true);
+			drm_rect_debug_print("dst: ", dst, false);
 
 			return vscale;
 		}
diff --git a/include/drm/drm_rect.h b/include/drm/drm_rect.h
index 26bb55e..83bb156 100644
--- a/include/drm/drm_rect.h
+++ b/include/drm/drm_rect.h
@@ -162,7 +162,8 @@ int drm_rect_calc_hscale_relaxed(struct drm_rect *src,
 int drm_rect_calc_vscale_relaxed(struct drm_rect *src,
 				 struct drm_rect *dst,
 				 int min_vscale, int max_vscale);
-void drm_rect_debug_print(const struct drm_rect *r, bool fixed_point);
+void drm_rect_debug_print(const char *prefix,
+			  const struct drm_rect *r, bool fixed_point);
 void drm_rect_rotate(struct drm_rect *r,
 		     int width, int height,
 		     unsigned int rotation);
-- 
2.4.10

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