diff options
Diffstat (limited to 'drivers/usb/host/xhci-mem.c')
-rw-r--r-- | drivers/usb/host/xhci-mem.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index fd9e03afd91..8cc824bbc4e 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c | |||
@@ -835,6 +835,27 @@ fail: | |||
835 | return 0; | 835 | return 0; |
836 | } | 836 | } |
837 | 837 | ||
838 | void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci, | ||
839 | struct usb_device *udev) | ||
840 | { | ||
841 | struct xhci_virt_device *virt_dev; | ||
842 | struct xhci_ep_ctx *ep0_ctx; | ||
843 | struct xhci_ring *ep_ring; | ||
844 | |||
845 | virt_dev = xhci->devs[udev->slot_id]; | ||
846 | ep0_ctx = xhci_get_ep_ctx(xhci, virt_dev->in_ctx, 0); | ||
847 | ep_ring = virt_dev->eps[0].ring; | ||
848 | /* | ||
849 | * FIXME we don't keep track of the dequeue pointer very well after a | ||
850 | * Set TR dequeue pointer, so we're setting the dequeue pointer of the | ||
851 | * host to our enqueue pointer. This should only be called after a | ||
852 | * configured device has reset, so all control transfers should have | ||
853 | * been completed or cancelled before the reset. | ||
854 | */ | ||
855 | ep0_ctx->deq = xhci_trb_virt_to_dma(ep_ring->enq_seg, ep_ring->enqueue); | ||
856 | ep0_ctx->deq |= ep_ring->cycle_state; | ||
857 | } | ||
858 | |||
838 | /* Setup an xHCI virtual device for a Set Address command */ | 859 | /* Setup an xHCI virtual device for a Set Address command */ |
839 | int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev) | 860 | int xhci_setup_addressable_virt_dev(struct xhci_hcd *xhci, struct usb_device *udev) |
840 | { | 861 | { |