On Tue, Sep 13, 2016 at 09:38:22PM -0300, Paulo Zanoni wrote:
> Now that this code is part of the compute stage we can return -EINVAL
> to prevent the modeset instead of giving a WARN and trying anyway.
>
> Reported-by: Lyude <cpaul@xxxxxxxxxx>
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 9edc8ce..6394db7 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -3589,11 +3589,11 @@ static int skl_compute_plane_wm(const struct drm_i915_private *dev_priv,
> case 2:
> y_min_scanlines = 8;
> break;
> - default:
> - WARN(1, "Unsupported pixel depth for rotation");
> case 4:
> y_min_scanlines = 4;
> break;
> + default:
> + return -EINVAL;
Considering this should never happen, MISSING_CASE() would be the
appropriate choice here.
> }
> } else {
> y_min_scanlines = 4;
> --
> 2.7.4
>
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--
Ville Syrjälä
Intel OTC
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