[PATCH 3/7] drm/qxl: notify that the monitor config changed

[Marc-André Lureau]

drm_helper_hpd_irq_event() only notifies when the connector status
changed. However, Spice monitor config can change while the connector is
connected, to support arbitrary resolution. Do an hotplug event if it
wasn't done by drm_helper_hpd_irq_event().

Signed-off-by: Marc-André Lureau <marcandre.lureau at redhat.com>
---
 drivers/gpu/drm/qxl/qxl_display.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
index 835caba..c2cc9b5 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -107,7 +107,12 @@ void qxl_display_read_client_monitors_config(struct qxl_device *qdev)
 		qxl_io_log(qdev, "failed crc check for client_monitors_config,"
 				 " retrying\n");
 	}
-	drm_helper_hpd_irq_event(qdev->ddev);
+
+	if (!drm_helper_hpd_irq_event(qdev->ddev)) {
+		/* notify that the monitor configuration changed, to
+		   adjust at the arbitrary resolution */
+		drm_kms_helper_hotplug_event(qdev->ddev);
+	}
 }
 
 static int qxl_add_monitors_config_modes(struct drm_connector *connector)
-- 
1.8.3.1