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usb: dwc3: ep0: only change to ADDRESS if set_config() succeeds

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In case we're switching back to USB_STATE_ADDRESS
from USB_STATE_CONFIGURED (if host sends
a set configuration command for configuration
zero), we should only switch if the request
is successfully processed by the gadget driver.

Reported-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2013-07-22 12:31:31 +03:00
parent 5702f75375
commit 7a42d83536
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/dwc3/ep0.c
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@ -551,7 +551,7 @@ static int dwc3_ep0_set_config(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl)
case USB_STATE_CONFIGURED:
ret = dwc3_ep0_delegate_req(dwc, ctrl);
if (!cfg)
if (!cfg && !ret)
usb_gadget_set_state(&dwc->gadget,
USB_STATE_ADDRESS);
break;