[Intel-gfx] [PATCHv2] drm/i915/display: Print useful information on error

[Arun R Murthy]

For modifier not supporting async flip, print the modifier and display
version. Helps in reading the error message.

v2: Reframe the error message (Jani)

Signed-off-by: Arun R Murthy <arun.r.mur...@intel.com>
---
 drivers/gpu/drm/i915/display/intel_display.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c 
b/drivers/gpu/drm/i915/display/intel_display.c
index f51a55f4e9d0..adaba43bde2b 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -6012,8 +6012,9 @@ static int intel_async_flip_check_hw(struct 
intel_atomic_state *state, struct in
                         */
                        if (DISPLAY_VER(i915) < 12) {
                                drm_dbg_kms(&i915->drm,
-                                           "[PLANE:%d:%s] Modifier does not 
support async flips\n",
-                                           plane->base.base.id, 
plane->base.name);
+                                           "[PLANE:%d:%s] Modifier 0x%llx does 
not support asyn flip on display ver %d\n",
+                                           plane->base.base.id, 
plane->base.name,
+                                           new_plane_state->hw.fb->modifier, 
DISPLAY_VER(i915));
                                return -EINVAL;
                        }
                        break;
@@ -6025,8 +6026,9 @@ static int intel_async_flip_check_hw(struct 
intel_atomic_state *state, struct in
                        break;
                default:
                        drm_dbg_kms(&i915->drm,
-                                   "[PLANE:%d:%s] Modifier does not support 
async flips\n",
-                                   plane->base.base.id, plane->base.name);
+                                   "[PLANE:%d:%s] Modifier 0x%llx does not 
support async flip\n",
+                                   plane->base.base.id, plane->base.name,
+                                   new_plane_state->hw.fb->modifier);
                        return -EINVAL;
                }
 
-- 
2.25.1