[PATCH 5.10 100/290] qxl: Fix uninitialised struct field head.surface_id

From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

From: Colin Ian King <redacted>

commit 738acd49eb018feb873e0fac8f9517493f6ce2c7 upstream.

The surface_id struct field in head is not being initialized and
static analysis warns that this is being passed through to
dev->monitors_config->heads[i] on an assignment. Clear up this
warning by initializing it to zero.

Addresses-Coverity: ("Uninitialized scalar variable")
Fixes: a6d3c4d79822 ("qxl: hook monitors_config updates into crtc, not encoder.")
Signed-off-by: Colin Ian King <redacted>
Link: http://patchwork.freedesktop.org/patch/msgid/20210304094928.2280722-1-colin.king@canonical.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/gpu/drm/qxl/qxl_display.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c

@@ -327,6 +327,7 @@ static void qxl_crtc_update_monitors_con
 
 	head.id = i;
 	head.flags = 0;
+	head.surface_id = 0;
 	oldcount = qdev->monitors_config->count;
 	if (crtc->state->active) {
 		struct drm_display_mode *mode = &crtc->mode;