[src/nick-nhusb]: src/sys/dev/usb Rewrite if-else-if chains with switch-case.

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

details:   https://anonhg.NetBSD.org/src/rev/eb9915280ab1
branches:  nick-nhusb
changeset: 334212:eb9915280ab1
user:      skrll <skrll%NetBSD.org@localhost>
date:      Wed May 27 07:08:16 2015 +0000

description:
Rewrite if-else-if chains with switch-case.

>From Takahiro HAYASHI.

diffstat:

 sys/dev/usb/xhci.c |  30 +++++++++++++++++++++---------
 1 files changed, 21 insertions(+), 9 deletions(-)

diffs (68 lines):

diff -r b45a5d9d21bd -r eb9915280ab1 sys/dev/usb/xhci.c
--- a/sys/dev/usb/xhci.c        Wed May 27 07:06:58 2015 +0000
+++ b/sys/dev/usb/xhci.c        Wed May 27 07:08:16 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: xhci.c,v 1.28.2.24 2015/05/27 07:06:58 skrll Exp $     */
+/*     $NetBSD: xhci.c,v 1.28.2.25 2015/05/27 07:08:16 skrll Exp $     */
 
 /*
  * Copyright (c) 2013 Jonathan A. Kollasch
@@ -36,7 +36,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xhci.c,v 1.28.2.24 2015/05/27 07:06:58 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xhci.c,v 1.28.2.25 2015/05/27 07:08:16 skrll Exp $");
 
 #include "opt_usb.h"
 
@@ -1754,17 +1754,19 @@
                        }
                }
 
-               if (trberr == XHCI_TRB_ERROR_SUCCESS ||
-                   trberr == XHCI_TRB_ERROR_SHORT_PKT) {
+               switch (trberr) {
+               case XHCI_TRB_ERROR_SHORT_PKT:
+               case XHCI_TRB_ERROR_SUCCESS:
                        xfer->ux_actlen =
                            xfer->ux_length - XHCI_TRB_2_REM_GET(trb_2);
                        err = USBD_NORMAL_COMPLETION;
-               } else if (trberr == XHCI_TRB_ERROR_STALL ||
-                          trberr == XHCI_TRB_ERROR_BABBLE) {
-                       err = USBD_STALLED;
-                       xr->is_halted = true;
+                       break;
+               case XHCI_TRB_ERROR_STALL:
+               case XHCI_TRB_ERROR_BABBLE:
                        DPRINTFN(1, "evh: xfer done: ERR %u slot %u dci %u",
                            trberr, slot, dci, 0);
+                       xr->is_halted = true;
+                       err = USBD_STALLED;
 #if 1 /* XXX experimental */
                        /*
                         * Stalled endpoints can be recoverd by issuing
@@ -1781,12 +1783,22 @@
                         */
                        xfer->ux_status = err;
                        xhci_clear_endpoint_stall_async(xfer);
+                       return;
+#else
                        break;
 #endif
-               } else {
+               case XHCI_TRB_ERROR_CMD_ABORTED:
+               case XHCI_TRB_ERROR_STOPPED:
+                       err = USBD_CANCELLED;
+                       break;
+               case XHCI_TRB_ERROR_NO_SLOTS:
+                       err = USBD_NO_ADDR;
+                       break;
+               default:
                        DPRINTFN(1, "evh: xfer done: ERR %u slot %u dci %u",
                            trberr, slot, dci, 0);
                        err = USBD_IOERROR;
+                       break;
                }
                xfer->ux_status = err;