From: Alex Williamson <[email protected]> If we're using vga switcheroo, the device may be turned off and poking it can return random state. This provokes an OOPS fixed separately by 8ff887c847 (drm/i915/dp: Be paranoid in case we disable a DP before it is attached). Trying to use and respond to events on a device that has been turned off by the user is in principle a silly thing to do.
Signed-off-by: Alex Williamson <[email protected]> Signed-off-by: Chris Wilson <[email protected]> Cc: [email protected] Signed-off-by: Keith Packard <[email protected]> --- 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. -- 1.7.4.1 _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
