From: Felipe Balbi <balbi@ti.com>
Date: Sat, 15 Oct 2011 18:37:35 +0000 (+0300)
Subject: usb: dwc3: ep0: SetAddress() won't be issued while Configured
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=f96a6ec1db1ac730b5a031f2c2f7fcc6b07459d8;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

usb: dwc3: ep0: SetAddress() won't be issued while Configured

I have talked to USB-IF about USB30CV issuing SetAddres()
with a device on Configured state and they have agreed on
changing USB30CV not to do so.

Adding back the STALL reply in such case and while at
that, also add a debugging message for an address which
is too large.

Signed-off-by: Felipe Balbi <balbi@ti.com>
---

diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c
index 69a4e43ddf5..24b447e40bc 100644
--- a/drivers/usb/dwc3/ep0.c
+++ b/drivers/usb/dwc3/ep0.c
@@ -422,8 +422,15 @@ static int dwc3_ep0_set_address(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
 	u32 reg;
 
 	addr = le16_to_cpu(ctrl->wValue);
-	if (addr > 127)
+	if (addr > 127) {
+		dev_dbg(dwc->dev, "invalid device address %d\n", addr);
 		return -EINVAL;
+	}
+
+	if (dwc->dev_state == DWC3_CONFIGURED_STATE) {
+		dev_dbg(dwc->dev, "trying to set address when configured\n");
+		return -EINVAL;
+	}
 
 	reg = dwc3_readl(dwc->regs, DWC3_DCFG);
 	reg &= ~(DWC3_DCFG_DEVADDR_MASK);