Patch "drm/qxl: only report first monitor as connected if we have no state" has been added to the 4.2-stable tree

Patch "drm/qxl: only report first monitor as connected if we have no state" has been added to the 4.2-stable tree

[gregkh]

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

    drm/qxl: only report first monitor as connected if we have no state

to the 4.2-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-qxl-only-report-first-monitor-as-connected-if-we-have-no-state.patch
and it can be found in the queue-4.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 69e5d3f893e19613486f300fd6e631810338aa4b Mon Sep 17 00:00:00 2001
From: Dave Airlie <airlied@redhat.com>
Date: Mon, 14 Sep 2015 10:28:34 +1000
Subject: drm/qxl: only report first monitor as connected if we have no state

From: Dave Airlie <airlied@redhat.com>

commit 69e5d3f893e19613486f300fd6e631810338aa4b upstream.

If the server isn't new enough to give us state, report the first
monitor as always connected, otherwise believe the server side.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/qxl/qxl_display.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -886,13 +886,15 @@ static enum drm_connector_status qxl_con
 		drm_connector_to_qxl_output(connector);
 	struct drm_device *ddev = connector->dev;
 	struct qxl_device *qdev = ddev->dev_private;
-	int connected;
+	bool connected = false;
 
 	/* The first monitor is always connected */
-	connected = (output->index == 0) ||
-		    (qdev->client_monitors_config &&
-		     qdev->client_monitors_config->count > output->index &&
-		     qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]));
+	if (!qdev->client_monitors_config) {
+		if (output->index == 0)
+			connected = true;
+	} else
+		connected = qdev->client_monitors_config->count > output->index &&
+		     qxl_head_enabled(&qdev->client_monitors_config->heads[output->index]);
 
 	DRM_DEBUG("#%d connected: %d\n", output->index, connected);
 	if (!connected)


Patches currently in stable-queue which might be from airlied@redhat.com are

queue-4.2/drm-qxl-only-report-first-monitor-as-connected-if-we-have-no-state.patch
queue-4.2/drm-qxl-recreate-the-primary-surface-when-the-bo-is-not-primary.patch