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xhci: For streams the css flag most be read from the stream-ctx on ep stop 

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
This commit is contained in:
Hans de Goede 2013-10-04 00:29:47 +02:00 committed by Sarah Sharp
parent ee4aa54bce
commit c4bedb77ec
1 changed files with 11 additions and 3 deletions
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14
drivers/usb/host/xhci-ring.c
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@ -546,9 +546,9 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
struct xhci_dequeue_state *state)
{
struct xhci_virt_device *dev = xhci->devs[slot_id];
struct xhci_virt_ep *ep = &dev->eps[ep_index];
struct xhci_ring *ep_ring;
struct xhci_generic_trb *trb;
struct xhci_ep_ctx *ep_ctx;
dma_addr_t addr;
ep_ring = xhci_triad_to_transfer_ring(xhci, slot_id,
@ -573,8 +573,16 @@ void xhci_find_new_dequeue_state(struct xhci_hcd *xhci,
/* Dig out the cycle state saved by the xHC during the stop ep cmd */
xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,
"Finding endpoint context");
ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
state->new_cycle_state = 0x1 & le64_to_cpu(ep_ctx->deq);
/* 4.6.9 the css flag is written to the stream context for streams */
if (ep->ep_state & EP_HAS_STREAMS) {
struct xhci_stream_ctx *ctx =
&ep->stream_info->stream_ctx_array[stream_id];
state->new_cycle_state = 0x1 & le64_to_cpu(ctx->stream_ring);
} else {
struct xhci_ep_ctx *ep_ctx
= xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index);
state->new_cycle_state = 0x1 & le64_to_cpu(ep_ctx->deq);
}
state->new_deq_ptr = cur_td->last_trb;
xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb,