commit dd9d2f3aa3f8908fc3133041ccba45792549f25c
author Chunfeng Yun <chunfeng.yun@mediatek.com> Fri Oct 13 17:10:45 2017 +0800
committer Felipe Balbi <felipe.balbi@linux.intel.com> Thu Oct 19 10:38:12 2017 +0300
tree 4d37538a7e19f8f7abff64346edce553ea8fe3b4
parent 6638ec515f2cce73ba996a725fe351fd643e27c8

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 <chunfeng.yun@mediatek.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>

drivers/usb/mtu3/mtu3_plat.c

diff --git a/drivers/usb/mtu3/mtu3_plat.c b/drivers/usb/mtu3/mtu3_plat.c
index 7ca81f4e..9ff3357 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;