If we're using vga switcheroo, the device may be turned off
and poking at it can cause an oops.
Signed-off-by: Alex Williamson <alex.williamson at redhat.com>
---
drivers/gpu/drm/i915/intel_lvds.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_lvds.c
b/drivers/gpu/drm/i915/intel_lvds.c
index a562bd2..67cb076 100644
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -539,6 +539,9 @@ static int intel_lid_notify(struct notifier_block *nb,
unsigned long val,
struct drm_device *dev = dev_priv->dev;
struct drm_connector *connector = dev_priv->int_lvds_connector;
+ if (dev->switch_power_state != DRM_SWITCH_POWER_ON)
+ return NOTIFY_OK;
+
/*
* check and update the status of LVDS connector after receiving
* the LID nofication event.
