On Wed, 2020-01-01 at 01:37 +0200, Imre Deak wrote:
> Print a debug message if the FB plane[0] offset is not 0 as expected,
> to
> help understainding an add FB IOCTL fail.
>
> Cc: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Cc: Mika Kahola <mika.kahola@xxxxxxxxx>
> Signed-off-by: Imre Deak <imre.deak@xxxxxxxxx>
Reviewed-by: Mika Kahola <mika.kahola@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/intel_display.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index bbc9cf288067..2c2450d3469b 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -16912,8 +16912,11 @@ static int intel_framebuffer_init(struct
> intel_framebuffer *intel_fb,
> }
>
> /* FIXME need to adjust LINOFF/TILEOFF accordingly. */
> - if (mode_cmd->offsets[0] != 0)
> + if (mode_cmd->offsets[0] != 0) {
> + DRM_DEBUG_KMS("plane 0 offset (0x%08x) must be 0\n",
> + mode_cmd->offsets[0]);
> goto err;
> + }
>
> drm_helper_mode_fill_fb_struct(&dev_priv->drm, fb, mode_cmd);
>
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