USB: xhci: Configure endpoint code refactoring.
Refactor out the code issue, wait for, and parse the event completion code
for a configure endpoint command. Modify it to support the evaluate
context command, which has a very similar submission process. Add
functions to copy parts of the output context into the input context
(which will be used in the evaluate context command).
Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c
index cb20338..c5313c8 100644
--- a/drivers/usb/host/xhci-mem.c
+++ b/drivers/usb/host/xhci-mem.c
@@ -601,6 +601,44 @@
*/
}
+/* Copy output xhci_ep_ctx to the input xhci_ep_ctx copy.
+ * Useful when you want to change one particular aspect of the endpoint and then
+ * issue a configure endpoint command.
+ */
+void xhci_endpoint_copy(struct xhci_hcd *xhci,
+ struct xhci_virt_device *vdev, unsigned int ep_index)
+{
+ struct xhci_ep_ctx *out_ep_ctx;
+ struct xhci_ep_ctx *in_ep_ctx;
+
+ out_ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index);
+ in_ep_ctx = xhci_get_ep_ctx(xhci, vdev->in_ctx, ep_index);
+
+ in_ep_ctx->ep_info = out_ep_ctx->ep_info;
+ in_ep_ctx->ep_info2 = out_ep_ctx->ep_info2;
+ in_ep_ctx->deq = out_ep_ctx->deq;
+ in_ep_ctx->tx_info = out_ep_ctx->tx_info;
+}
+
+/* Copy output xhci_slot_ctx to the input xhci_slot_ctx.
+ * Useful when you want to change one particular aspect of the endpoint and then
+ * issue a configure endpoint command. Only the context entries field matters,
+ * but we'll copy the whole thing anyway.
+ */
+void xhci_slot_copy(struct xhci_hcd *xhci, struct xhci_virt_device *vdev)
+{
+ struct xhci_slot_ctx *in_slot_ctx;
+ struct xhci_slot_ctx *out_slot_ctx;
+
+ in_slot_ctx = xhci_get_slot_ctx(xhci, vdev->in_ctx);
+ out_slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx);
+
+ in_slot_ctx->dev_info = out_slot_ctx->dev_info;
+ in_slot_ctx->dev_info2 = out_slot_ctx->dev_info2;
+ in_slot_ctx->tt_info = out_slot_ctx->tt_info;
+ in_slot_ctx->dev_state = out_slot_ctx->dev_state;
+}
+
/* Set up the scratchpad buffer array and scratchpad buffers, if needed. */
static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags)
{