Patch "drm: Stop resetting connector state to unknown" has been added to the 4.1-stable tree

This is a note to let you know that I've just added the patch titled

drm: Stop resetting connector state to unknown

to the 4.1-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-stop-resetting-connector-state-to-unknown.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Daniel Vetter <[email protected]>
Date: Thu, 16 Jul 2015 16:47:50 +0200
Subject: drm: Stop resetting connector state to unknown
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From: Daniel Vetter <[email protected]>

commit 5677d67ae3949f09f57357241b88222d49b8c782 upstream.

It's causing piles of issues since we've stopped forcing full detect cycles in the sysfs interfaces with

commit c484f02d0f02fbbfc6decc945a69aae011041a27

Author: Chris Wilson <[email protected]>
Date:   Fri Mar 6 12:36:42 2015 +0000

drm: Lighten sysfs connector 'status'

The original justification for this was that the hpd handlers could use the unknown state as a hint to force a full detection. But current i915 code isn't doing that any more, and no one else really uses reset on resume. So instead just keep the old state around.

References: http://article.gmane.org/gmane.comp.freedesktop.xorg.drivers.intel/62584
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=100641

---
 drivers/gpu/drm/drm_crtc.c |    5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

@@ -5051,12 +5051,9 @@ void drm_mode_config_reset(struct drm_de
 		if (encoder->funcs->reset)
 			encoder->funcs->reset(encoder);
 
-	list_for_each_entry(connector, &dev->mode_config.connector_list, head) {
-		connector->status = connector_status_unknown;
-
+	list_for_each_entry(connector, &dev->mode_config.connector_list, head)
 		if (connector->funcs->reset)
 			connector->funcs->reset(connector);
-	}
 }
 EXPORT_SYMBOL(drm_mode_config_reset);
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.1/drm-vgem-set-unique-to-vgem.patch queue-4.1/drm-dp-mst-take-lock-around-looking-up-the-branch-device-on-hpd-irq.patch queue-4.1/drm-i915-declare-the-swizzling-unknown-for-l-shaped-configurations.patch queue-4.1/drm-dp-mst-make-sure-mst_primary-mstb-is-valid-in-work-function.patch queue-4.1/drm-provide-compat-ioctl-for-addfb2.1.patch queue-4.1/drm-atomic-fix-out-of-bounds-read-in-for_each_-_in_state-helpers.patch queue-4.1/revert-drm-i915-declare-the-swizzling-unknown-for-l-shaped-configurations.patch queue-4.1/drm-i915-forward-all-core-drm-ioctls-to-core-compat-handling.patch queue-4.1/drm-stop-resetting-connector-state-to-unknown.patch queue-4.1/drm-i915-snapshot-seqno-of-most-recently-submitted-request.patch queue-4.1/drm-i915-use-two-32bit-reads-for-select-64bit-reg_read-ioctls.patch queue-4.1/drm-rockchip-use-drm_gem_mmap-helpers.patch queue-4.1/drm-dp-mst-close-deadlock-in-connector-destruction.patch queue-4.1/drm-add-a-check-for-x-y-in-drm_mode_setcrtc.patch