This is a note to let you know that I've just added the patch titled
drm/i915/lvds: Only act on lid notify when the device is on
to the 2.6.38-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-i915-lvds-only-act-on-lid-notify-when-the-device-is-on.patch
and it can be found in the queue-2.6.38 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 2fb4e61d9471867677c97bf11dba8f1e9dfa7f7c Mon Sep 17 00:00:00 2001
From: Alex Williamson <[email protected]>
Date: Thu, 21 Apr 2011 16:08:14 -0600
Subject: drm/i915/lvds: Only act on lid notify when the device is on
From: Alex Williamson <[email protected]>
commit 2fb4e61d9471867677c97bf11dba8f1e9dfa7f7c upstream.
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]>
Signed-off-by: Keith Packard <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/i915/intel_lvds.c | 3 +++
1 file changed, 3 insertions(+)
--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -540,6 +540,9 @@ static int intel_lid_notify(struct notif
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.
Patches currently in stable-queue which might be from
[email protected] are
queue-2.6.38/drm-i915-lvds-only-act-on-lid-notify-when-the-device-is-on.patch
_______________________________________________
stable mailing list
[email protected]
http://linux.kernel.org/mailman/listinfo/stable
