[xhci] Ring doorbell as part of endpoint reset

The endpoint may already have enqueued TRBs at the time that xhci_endpoint_reset() is called. Ring the doorbell to resume processing these TRBs immediately, rather than waiting until the next call to xhci_endpoint_message() or xhci_endpoint_stream(). Signed-off-by: Michael Brown <mcb30@ipxe.org>
ipxe · Mar 23, 2015 · 661189e · 661189e
1 parent a3c00d8
commit 661189e
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/src/drivers/usb/xhci.c b/src/drivers/usb/xhci.c
@@ -2437,6 +2437,9 @@ static int xhci_endpoint_reset ( struct usb_endpoint *ep ) {
 	if ( ( rc = xhci_set_tr_dequeue_pointer ( xhci, slot, endpoint ) ) != 0)
 		return rc;
 
+	/* Ring doorbell to resume processing */
+	xhci_doorbell ( &endpoint->ring );
+
 	DBGC ( xhci, "XHCI %p slot %d ctx %d reset\n",
 	       xhci, slot->id, endpoint->ctx );
 	return 0;