[PATCH 06/76] xhci: For streams the css flag most be read from the stream-ctx on ep stop

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Hans de Goede <hdegoede@xxxxxxxxxx>

Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Sarah Sharp <sarah.a.sharp@xxxxxxxxxxxxxxx>
---
 drivers/usb/host/xhci-ring.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c
index 3ec1d8fe06fa..51c5109bbefc 100644
--- a/drivers/usb/host/xhci-ring.c
+++ b/drivers/usb/host/xhci-ring.c
@@ -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,
-- 
1.8.5.5

--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Media]     [Linux Input]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Old Linux USB Devel Archive]

  Powered by Linux