[src/trunk]: src/sys/dev/usb xhci(4): Be more concise in putting the setup re...

[jakllsch <jakllsch%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f5013bd23cab
branches:  trunk
changeset: 972252:f5013bd23cab
user:      jakllsch <jakllsch%NetBSD.org@localhost>
date:      Thu May 21 12:46:44 2020 +0000

description:
xhci(4): Be more concise in putting the setup request in TRB immediate data.

Or: memcpy(),htole64() is replaced by functionally-identical le64dec().

diffstat:

 sys/dev/usb/xhci.c |  9 ++++-----
 1 files changed, 4 insertions(+), 5 deletions(-)

diffs (35 lines):

diff -r ee4b8129cbc6 -r f5013bd23cab sys/dev/usb/xhci.c
--- a/sys/dev/usb/xhci.c        Thu May 21 09:36:24 2020 +0000
+++ b/sys/dev/usb/xhci.c        Thu May 21 12:46:44 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: xhci.c,v 1.125 2020/05/20 17:32:27 jakllsch Exp $      */
+/*     $NetBSD: xhci.c,v 1.126 2020/05/21 12:46:44 jakllsch Exp $      */
 
 /*
  * Copyright (c) 2013 Jonathan A. Kollasch
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xhci.c,v 1.125 2020/05/20 17:32:27 jakllsch Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xhci.c,v 1.126 2020/05/21 12:46:44 jakllsch Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -3869,14 +3869,13 @@
        i = 0;
 
        /* setup phase */
-       memcpy(&parameter, req, sizeof(parameter));
+       parameter = le64dec(req); /* to keep USB endian after xhci_trb_put() */
        status = XHCI_TRB_2_IRQ_SET(0) | XHCI_TRB_2_BYTES_SET(sizeof(*req));
        control = ((len == 0) ? XHCI_TRB_3_TRT_NONE :
             (isread ? XHCI_TRB_3_TRT_IN : XHCI_TRB_3_TRT_OUT)) |
            XHCI_TRB_3_TYPE_SET(XHCI_TRB_TYPE_SETUP_STAGE) |
            XHCI_TRB_3_IDT_BIT;
-       /* we need parameter un-swapped on big endian, so pre-swap it here */
-       xhci_soft_trb_put(&xx->xx_trb[i++], htole64(parameter), status, control);
+       xhci_soft_trb_put(&xx->xx_trb[i++], parameter, status, control);
 
        if (len != 0) {
                /* data phase */