drm/tegra: fb: Add diagnostics for framebuffer modifiers

Add a debug message to let the user know when a framebuffer modifier is
not supported.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/drm/tegra/fb.c b/drivers/gpu/drm/tegra/fb.c
index 01939c57fc74d5b13e0ea259c28e7fb849d91659..350f33206076245399a037949c22c234a207d4d5 100644 (file)
--- a/drivers/gpu/drm/tegra/fb.c
+++ b/drivers/gpu/drm/tegra/fb.c
@@ -86,6 +86,7 @@ int tegra_fb_get_tiling(struct drm_framebuffer *framebuffer,
                break;
 
        default:
+               DRM_DEBUG_KMS("unknown format modifier: %llx\n", modifier);
                return -EINVAL;
        }