[PATCH v3 3/5] drm/qxl: clear the monitor configuration for disabled head zero

[Dillon Amburgey]

Disabling head zero leaves its previous monitor entry intact because
the inactive-head path only clears heads with a nonzero index. With
another head still active, QXL continues publishing the disabled head
as a visible monitor.

Clear head zero using the same path as the other disabled heads.

Fixes: a6d3c4d79822 ("qxl: hook monitors_config updates into crtc, not 
encoder.")
Assisted-by: LLM sparse
Signed-off-by: Dillon Amburgey <dill...@gmail.com>
---
 drivers/gpu/drm/qxl/qxl_display.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_display.c 
b/drivers/gpu/drm/qxl/qxl_display.c
index 51087cacff74..05de8dd3144d 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -350,16 +350,13 @@ static void qxl_crtc_update_monitors_config(struct 
drm_crtc *crtc,
                        qdev->monitors_config->count = i + 1;
                if (qdev->primary_bo == qdev->dumb_shadow_bo)
                        head.x += qdev->dumb_heads[i].x;
-       } else if (i > 0) {
+       } else {
                head.width = 0;
                head.height = 0;
                head.x = 0;
                head.y = 0;
                if (qdev->monitors_config->count == i + 1)
                        qdev->monitors_config->count = i;
-       } else {
-               DRM_DEBUG_KMS("inactive head 0, skip (%s)\n", reason);
-               return;
        }
 
        if (head.width  == qdev->monitors_config->heads[i].width  &&