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usb: dwc2: Fix SET/CLEAR_FEATURE and GET_STATUS flows 

SET/CLEAR_FEATURE for Remote Wakeup allowance not handled correctly.
GET_STATUS handling provided not correct data on DATA Stage.
Issue seen when gadget's dr_mode set to "otg" mode and connected
to MacOS.
Both are fixed and tested using USBCV Ch.9 tests.

Signed-off-by: Minas Harutyunyan <hminas@synopsys.com>
Fixes: fa389a6d77 ("usb: dwc2: gadget: Add remote_wakeup_allowed flag")
Tested-by: Jack Mitchell <ml@embed.me.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Felipe Balbi <balbi@kernel.org>
alistair/sensors
Minas Harutyunyan 2020-01-21 14:17:07 +04:00 committed by Felipe Balbi
parent 860ef6cd3f
commit 9a0d6f7c0a
1 changed files with 16 additions and 12 deletions
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28
drivers/usb/dwc2/gadget.c
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@ -1634,6 +1634,7 @@ static int dwc2_hsotg_process_req_status(struct dwc2_hsotg *hsotg,
struct dwc2_hsotg_ep *ep0 = hsotg->eps_out[0];
struct dwc2_hsotg_ep *ep;
__le16 reply;
u16 status;
int ret;
dev_dbg(hsotg->dev, "%s: USB_REQ_GET_STATUS\n", __func__);
@ -1645,11 +1646,10 @@ static int dwc2_hsotg_process_req_status(struct dwc2_hsotg *hsotg,
switch (ctrl->bRequestType & USB_RECIP_MASK) {
case USB_RECIP_DEVICE:
/*
* bit 0 => self powered
* bit 1 => remote wakeup
*/
reply = cpu_to_le16(0);
status = 1 << USB_DEVICE_SELF_POWERED;
status |= hsotg->remote_wakeup_allowed <<
USB_DEVICE_REMOTE_WAKEUP;
reply = cpu_to_le16(status);
break;
case USB_RECIP_INTERFACE:
@ -1760,7 +1760,10 @@ static int dwc2_hsotg_process_req_feature(struct dwc2_hsotg *hsotg,
case USB_RECIP_DEVICE:
switch (wValue) {
case USB_DEVICE_REMOTE_WAKEUP:
hsotg->remote_wakeup_allowed = 1;
if (set)
hsotg->remote_wakeup_allowed = 1;
else
hsotg->remote_wakeup_allowed = 0;
break;
case USB_DEVICE_TEST_MODE:
@ -1770,16 +1773,17 @@ static int dwc2_hsotg_process_req_feature(struct dwc2_hsotg *hsotg,
return -EINVAL;
hsotg->test_mode = wIndex >> 8;
ret = dwc2_hsotg_send_reply(hsotg, ep0, NULL, 0);
if (ret) {
dev_err(hsotg->dev,
"%s: failed to send reply\n", __func__);
return ret;
}
break;
default:
return -ENOENT;
}
ret = dwc2_hsotg_send_reply(hsotg, ep0, NULL, 0);
if (ret) {
dev_err(hsotg->dev,
"%s: failed to send reply\n", __func__);
return ret;
}
break;
case USB_RECIP_ENDPOINT: