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drm/i915/gen9: fail the modeset instead of WARNing on unsupported config

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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.

v2:
 - Fix typo (Paul Menzel).
 - Add MISSING_CASE() (Ville, Maarten).

Reported-by: Lyude <cpaul@redhat.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1474578035-424-10-git-send-email-paulo.r.zanoni@intel.com
This commit is contained in:
Paulo Zanoni 2016-09-22 18:00:35 -03:00
parent f1db3eafe5
commit 86a462bcad
1 changed files with 3 additions and 2 deletions
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5
drivers/gpu/drm/i915/intel_pm.c
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@ -3580,11 +3580,12 @@ 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:
MISSING_CASE(cpp);
return -EINVAL;
}
} else {
y_min_scanlines = 4;