diff options
Diffstat (limited to 'drivers/gpu/drm')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 3a0709a6e4a0..aab1c6c58edf 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1236,7 +1236,12 @@ void assert_panel_unlocked(struct drm_i915_private *dev_priv, enum pipe pipe) pp_reg = PP_CONTROL(pipe); panel_pipe = pipe; } else { + u32 port_sel; + pp_reg = PP_CONTROL(0); + port_sel = I915_READ(PP_ON_DELAYS(0)) & PANEL_PORT_SELECT_MASK; + + WARN_ON(port_sel != PANEL_PORT_SELECT_LVDS); intel_lvds_port_enabled(dev_priv, LVDS, &panel_pipe); } |