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Date: Thu, 28 Sep 2017 08:17:17 +0800 From: Chunfeng Yun <chunfeng.yun@...iatek.com> To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Felipe Balbi <felipe.balbi@...ux.intel.com>, Rob Herring <robh+dt@...nel.org> CC: Mathias Nyman <mathias.nyman@...el.com>, Matthias Brugger <matthias.bgg@...il.com>, Mark Rutland <mark.rutland@....com>, Ian Campbell <ijc+devicetree@...lion.org.uk>, Chunfeng Yun <chunfeng.yun@...iatek.com>, <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-usb@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>, <devicetree@...r.kernel.org> Subject: [PATCH 09/12] 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@...iatek.com> --- 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 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; -- 1.7.9.5
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