From: Xenia Ragiadakou <[email protected]> Since the slot id retrieved from the Reset Device TRB matches the slot id in the command completion event, which is available, there is no need to determine it again. This patch removes the uneccessary reassignment to slot id and adds a WARN_ON in case the two Slot ID fields differ (although according xhci spec rev1.0 they should not differ).
Signed-off-by: Xenia Ragiadakou <[email protected]> Signed-off-by: Sarah Sharp <[email protected]> --- drivers/usb/host/xhci-ring.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index e3b61b83..88939b7 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -1547,9 +1547,9 @@ bandwidth_change: xhci_handle_cmd_reset_ep(xhci, event, xhci->cmd_ring->dequeue); break; case TRB_TYPE(TRB_RESET_DEV): + WARN_ON(slot_id != TRB_TO_SLOT_ID( + le32_to_cpu(xhci->cmd_ring->dequeue->generic.field[3]))); xhci_dbg(xhci, "Completed reset device command.\n"); - slot_id = TRB_TO_SLOT_ID( - le32_to_cpu(xhci->cmd_ring->dequeue->generic.field[3])); virt_dev = xhci->devs[slot_id]; if (virt_dev) handle_cmd_in_cmd_wait_list(xhci, virt_dev, event); -- 1.8.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
