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Commit e2617796 authored by Felipe Balbi's avatar Felipe Balbi
Browse files

usb: dwc3: ep0: fix GetStatus handling (again) 



previous commit fixed part of it but it was still
calling usb_ep_queue() from IRQ context without
loosing locks. That cannot be done otherwise we will
have a recursive locking.

Also, we need to assign the 'dep' pointer on
dwc->ep0_usb_req otherwise we will have a NULL
pointer dereference on dwc3_map_buffer_to_dma().

Signed-off-by: default avatarFelipe Balbi <balbi@ti.com>
parent e0ce0b0a

drivers/usb/dwc3/ep0.c

+5 −2
Original line number Diff line number Diff line
@@ -302,11 +302,14 @@ static int dwc3_ep0_handle_status(struct dwc3 *dwc, 


	response_pkt = (__le16 *) dwc->setup_buf;

	*response_pkt = cpu_to_le16(usb_status);



	dep = dwc->eps[0];

	dwc->ep0_usb_req.dep = dep;

	dwc->ep0_usb_req.request.length = sizeof(*response_pkt);

	dwc->ep0_usb_req.request.dma = dwc->setup_buf_addr;

	dwc->ep0_usb_req.request.complete = dwc3_ep0_status_cmpl;

	return usb_ep_queue(&dwc->eps[0]->endpoint, &dwc->ep0_usb_req.request,

			GFP_ATOMIC);



	return __dwc3_gadget_ep0_queue(dep, &dwc->ep0_usb_req);

}



static int dwc3_ep0_handle_feature(struct dwc3 *dwc,