openwrt/target/linux/mediatek/patches-4.14/0111-usb-mtu3-set-invalid-dr_mode-as-dual-role-mode.patch

From e315036cdbf8dad7cff4df9dfe8bcff2eddf2277 Mon Sep 17 00:00:00 2001
From: Chunfeng Yun <[email protected]>
Date: Fri, 13 Oct 2017 17:10:45 +0800
Subject: [PATCH 111/224] usb: mtu3: set invalid dr_mode as dual-role mode

Treat dr_mode of USB_DR_MODE_UNKNOWN as USB_DR_MODE_OTG to
enhance functional robustness.

Signed-off-by: Chunfeng Yun <[email protected]>
Signed-off-by: Felipe Balbi <[email protected]>
---
 drivers/usb/mtu3/mtu3_plat.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c
index 7ca81f4e78a3..9ff33579b42e 100644
--- a/drivers/usb/mtu3/mtu3_plat.c
+++ b/drivers/usb/mtu3/mtu3_plat.c
@@ -283,10 +283,8 @@ static int get_ssusb_rscs(struct platform_device *pdev, struct ssusb_mtk *ssusb)
 		return PTR_ERR(ssusb->ippc_base);
 
 	ssusb->dr_mode = usb_get_dr_mode(dev);
-	if (ssusb->dr_mode == USB_DR_MODE_UNKNOWN) {
-		dev_err(dev, "dr_mode is error\n");
-		return -EINVAL;
-	}
+	if (ssusb->dr_mode == USB_DR_MODE_UNKNOWN)
+		ssusb->dr_mode = USB_DR_MODE_OTG;
 
 	if (ssusb->dr_mode == USB_DR_MODE_PERIPHERAL)
 		return 0;
-- 
2.11.0