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

[ville.syrj...@linux.intel.com]

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

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 at linux.intel.com>
---
 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