drm/i915: 830M doesn't have an LVDS port
There's no LVDS port on 830M so don't go reading the LVDS control
register.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index db1e0a4..9db009c 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7974,7 +7974,7 @@
else
i9xx_clock(refclk, &clock);
} else {
- u32 lvds = I915_READ(LVDS);
+ u32 lvds = IS_I830(dev) ? 0 : I915_READ(LVDS);
bool is_lvds = (pipe == 1) && (lvds & LVDS_PORT_EN);
if (is_lvds) {