[PATCH 1/2] drm/msm/dp: fix runtime PM leak on disconnect

[Johan Hovold]

Make sure to put the runtime PM usage count (and suspend) also when
receiving a disconnect event while in the ST_MAINLINK_READY state.

This specifically avoids leaking a runtime PM usage count on every
disconnect with display servers that do not automatically enable
external displays when receiving a hotplug notification.

Fixes: 5814b8bf086a ("drm/msm/dp: incorporate pm_runtime framework into DP driver")
Cc: stable@xxxxxxxxxxxxxxx      # 6.8
Cc: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
---
 drivers/gpu/drm/msm/dp/dp_display.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 4c72124ffb5d..8e8cf531da45 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -655,6 +655,7 @@ static int dp_hpd_unplug_handle(struct dp_display_private *dp, u32 data)
 		dp_display_host_phy_exit(dp);
 		dp->hpd_state = ST_DISCONNECTED;
 		dp_display_notify_disconnect(&dp->dp_display.pdev->dev);
+		pm_runtime_put_sync(&pdev->dev);
 		mutex_unlock(&dp->event_mutex);
 		return 0;
 	}
-- 
2.43.2