From e2617796053437df586c53e462076f74bcf268b4 Mon Sep 17 00:00:00 2001 From: Felipe Balbi Date: Tue, 29 Nov 2011 10:35:47 +0200 Subject: [PATCH] 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: Felipe Balbi --- drivers/usb/dwc3/ep0.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 1ba86a11465..d6bfc73dedb 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -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, -- 2.39.5