From 608b973b70f87e9a9bafbfdfa16aab68507aef45 Mon Sep 17 00:00:00 2001 From: Niklas Neronin Date: Mon, 29 Apr 2024 17:02:40 +0300 Subject: [PATCH] usb: xhci: remove goto 'cleanup' in handle_tx_event() By removing the goto 'cleanup' statement, and replacing it with 'continue', 'break' and 'return', helps simplify the code and further showcase in which case the while loop iterates. This change prepares for the comprehensive handle_tx_event() rework. Signed-off-by: Niklas Neronin Signed-off-by: Mathias Nyman Link: https://lore.kernel.org/r/20240429140245.3955523-14-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/xhci-ring.c | 38 ++++++++++++++++++++---------------- 1 file changed, 21 insertions(+), 17 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index 0f48f9befc942..b395708c488c2 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -2727,7 +2727,9 @@ static int handle_tx_event(struct xhci_hcd *xhci, "still with TDs queued?\n", TRB_TO_SLOT_ID(le32_to_cpu(event->flags)), ep_index); - goto cleanup; + if (ep->skip) + break; + return 0; case COMP_RING_OVERRUN: xhci_dbg(xhci, "overrun event on endpoint\n"); if (!list_empty(&ep_ring->td_list)) @@ -2735,7 +2737,9 @@ static int handle_tx_event(struct xhci_hcd *xhci, "still with TDs queued?\n", TRB_TO_SLOT_ID(le32_to_cpu(event->flags)), ep_index); - goto cleanup; + if (ep->skip) + break; + return 0; case COMP_MISSED_SERVICE_ERROR: /* * When encounter missed service error, one or more isoc tds @@ -2770,7 +2774,9 @@ static int handle_tx_event(struct xhci_hcd *xhci, xhci_warn(xhci, "ERROR Unknown event condition %u for slot %u ep %u , HC probably busted\n", trb_comp_code, slot_id, ep_index); - goto cleanup; + if (ep->skip) + break; + return 0; } do { @@ -2834,14 +2840,14 @@ static int handle_tx_event(struct xhci_hcd *xhci, */ if (!ep_seg && (trb_comp_code == COMP_STOPPED || trb_comp_code == COMP_STOPPED_LENGTH_INVALID)) { - goto cleanup; + continue; } if (!ep_seg) { if (ep->skip && usb_endpoint_xfer_isoc(&td->urb->ep->desc)) { skip_isoc_td(xhci, td, ep, status); - goto cleanup; + continue; } /* @@ -2926,19 +2932,17 @@ static int handle_tx_event(struct xhci_hcd *xhci, trb_comp_code)) xhci_handle_halted_endpoint(xhci, ep, td, EP_HARD_RESET); - goto cleanup; - } - - td->status = status; + } else { + td->status = status; - /* update the urb's actual_length and give back to the core */ - if (usb_endpoint_xfer_control(&td->urb->ep->desc)) - process_ctrl_td(xhci, ep, ep_ring, td, ep_trb, event); - else if (usb_endpoint_xfer_isoc(&td->urb->ep->desc)) - process_isoc_td(xhci, ep, ep_ring, td, ep_trb, event); - else - process_bulk_intr_td(xhci, ep, ep_ring, td, ep_trb, event); -cleanup:; + /* update the urb's actual_length and give back to the core */ + if (usb_endpoint_xfer_control(&td->urb->ep->desc)) + process_ctrl_td(xhci, ep, ep_ring, td, ep_trb, event); + else if (usb_endpoint_xfer_isoc(&td->urb->ep->desc)) + process_isoc_td(xhci, ep, ep_ring, td, ep_trb, event); + else + process_bulk_intr_td(xhci, ep, ep_ring, td, ep_trb, event); + } /* * If ep->skip is set, it means there are missed tds on the * endpoint ring need to take care of. -- 2.30.2