diff options
Diffstat (limited to 'drivers/usb/gadget/tegra_udc.c')
| -rw-r--r-- | drivers/usb/gadget/tegra_udc.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/usb/gadget/tegra_udc.c b/drivers/usb/gadget/tegra_udc.c index 41dc9318b664..51348d3edc60 100644 --- a/drivers/usb/gadget/tegra_udc.c +++ b/drivers/usb/gadget/tegra_udc.c @@ -994,10 +994,10 @@ tegra_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) dir = ep_is_in(ep) ? DMA_TO_DEVICE : DMA_FROM_DEVICE; - spin_unlock_irqrestore(&udc->lock, flags); - - if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) + if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN) { + spin_unlock_irqrestore(&udc->lock, flags); return -ESHUTDOWN; + } req->ep = ep; @@ -1011,8 +1011,10 @@ tegra_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) dma_set_attr(DMA_ATTR_SKIP_CPU_SYNC, &attrs); req->req.dma = dma_map_single_attrs(dev, req->req.buf, ext, dir, &attrs); - if (dma_mapping_error(dev, req->req.dma)) + if (dma_mapping_error(dev, req->req.dma)) { + spin_unlock_irqrestore(&udc->lock, flags); return -EAGAIN; + } dma_sync_single_for_device(dev, req->req.dma, orig, dir); @@ -1029,11 +1031,11 @@ tegra_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) /* build dtds and push them to device queue */ - status = tegra_req_to_dtd(req, gfp_flags); - if (status) + status = tegra_req_to_dtd(req, GFP_ATOMIC); + if (status) { + spin_unlock_irqrestore(&udc->lock, flags); goto err_unmap; - - spin_lock_irqsave(&udc->lock, flags); + } /* re-check if the ep has not been disabled */ if (unlikely(!ep->desc)) { |