From: Felipe Balbi <felipe.balbi@linux.intel.com>
Date: Thu, 8 Jun 2017 10:16:18 +0000 (+0300)
Subject: usb: dwc3: ep0: make sure wValue is 0 on GetStatus()
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9b0a1f95c4b48a18ae95e204b1bcde47436b0248;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

usb: dwc3: ep0: make sure wValue is 0 on GetStatus()

We don't (yet) support PTM_STATUS messages so let's not reply to them
erroneously.

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

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 8cfce8425101..827e376bfa97 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -319,10 +319,16 @@ static int dwc3_ep0_handle_status(struct dwc3 *dwc,
 {
 	struct dwc3_ep		*dep;
 	u32			recip;
+	u32			value;
 	u32			reg;
 	u16			usb_status = 0;
 	__le16			*response_pkt;
 
+	/* We don't support PTM_STATUS */
+	value = le16_to_cpu(ctrl->wValue);
+	if (value != 0)
+		return -EINVAL;
+
 	recip = ctrl->bRequestType & USB_RECIP_MASK;
 	switch (recip) {
 	case USB_RECIP_DEVICE: