[PATCH 07/24] drm/i915: show unknown sdvox registers on hdmi init

[Eugeni Dodonov <eugeni.dodonov@intel.com>]

This will throw a DRM_ERROR message when an unknown sdvox register is
given to intel_hdmi_init. When this happens, things could going to be pretty
much broken afterwards, so we better detect this as soon as possible.

Signed-off-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
---
 drivers/gpu/drm/i915/intel_hdmi.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index f6a9b83..d73a16c 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -606,6 +606,8 @@ void intel_hdmi_init(struct drm_device *dev, int sdvox_reg)
 		intel_encoder->clone_mask = (1 << INTEL_HDMIF_CLONE_BIT);
 		intel_hdmi->ddc_bus = GMBUS_PORT_DPD;
 		dev_priv->hotplug_supported_mask |= HDMID_HOTPLUG_INT_STATUS;
+	} else {
+		DRM_ERROR("Unknown sdvox register on HDMI init: %x\n", sdvox_reg);
 	}
 
 	intel_hdmi->sdvox_reg = sdvox_reg;
-- 
1.7.10