From fd91f035170152300732512119ba203cb5f73078 Mon Sep 17 00:00:00 2001
From: William Wu <william.wu@rock-chips.com>
Date: Fri, 24 Jan 2025 10:16:24 +0800
Subject: [PATCH] usb: dwc3: gadget: Avoid get frame in runtime suspended state

If dwc gadget is already in runtime suspended state, it should
not access the dwc3 register to get the frame number.

Signed-off-by: William Wu <william.wu@rock-chips.com>
Change-Id: I6107f8290eff68126198bcccc0561de7d480c221
---
 drivers/usb/dwc3/gadget.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index dc57ffe041a1..18e140a2e3d0 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2446,6 +2446,9 @@ static int dwc3_gadget_get_frame(struct usb_gadget *g)
 {
 	struct dwc3		*dwc = gadget_to_dwc(g);
 
+	if (pm_runtime_suspended(dwc->dev))
+		return 0;
+
 	return __dwc3_gadget_get_frame(dwc);
 }