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drm: Do not accept garbage mode aspect ratio flags
Don't let userspace feed us any old garbage in the mode aspect ratio flags. Cc: Ilia Mirkin <imirkin@alum.mit.edu> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20190620142639.17518-3-ville.syrjala@linux.intel.com Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
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1 changed files with 3 additions and 1 deletions
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@ -1977,9 +1977,11 @@ int drm_mode_convert_umode(struct drm_device *dev,
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case DRM_MODE_FLAG_PIC_AR_256_135:
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out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_256_135;
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break;
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default:
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case DRM_MODE_FLAG_PIC_AR_NONE:
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out->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
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break;
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default:
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return -EINVAL;
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}
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out->status = drm_mode_validate_driver(dev, out);
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