[PATCH 2/2] drm/msm/dp: fix runtime PM leak on connect failure

[Johan Hovold]

Make sure to balance the runtime PM usage counter (and suspend) before
returning on connect failures (e.g. DPCD read failures after a spurious
connect event or if link training fails).

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 8e8cf531da45..78464c395c3d 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -598,6 +598,7 @@ static int dp_hpd_plug_handle(struct dp_display_private *dp, u32 data)
 	ret = dp_display_usbpd_configure_cb(&pdev->dev);
 	if (ret) {	/* link train failed */
 		dp->hpd_state = ST_DISCONNECTED;
+		pm_runtime_put_sync(&pdev->dev);
 	} else {
 		dp->hpd_state = ST_MAINLINK_READY;
 	}
-- 
2.43.2