[src/trunk]: src/sys/dev/usb Attach serial number as property to all USB devi...

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

details:   https://anonhg.NetBSD.org/src/rev/10930752ae77
branches:  trunk
changeset: 341505:10930752ae77
user:      joerg <joerg%NetBSD.org@localhost>
date:      Sun Nov 08 23:25:17 2015 +0000

description:
Attach serial number as property to all USB devices having one.

diffstat:

 sys/dev/usb/usb_subr.c |  26 ++++++++++++++++++++++++--
 1 files changed, 24 insertions(+), 2 deletions(-)

diffs (61 lines):

diff -r 5523ceaa558e -r 10930752ae77 sys/dev/usb/usb_subr.c
--- a/sys/dev/usb/usb_subr.c    Sun Nov 08 23:23:30 2015 +0000
+++ b/sys/dev/usb/usb_subr.c    Sun Nov 08 23:25:17 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: usb_subr.c,v 1.203 2015/10/26 15:07:07 skrll Exp $     */
+/*     $NetBSD: usb_subr.c,v 1.204 2015/11/08 23:25:17 joerg Exp $     */
 /*     $FreeBSD: src/sys/dev/usb/usb_subr.c,v 1.18 1999/11/17 22:33:47 n_hibma Exp $   */
 
 /*
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usb_subr.c,v 1.203 2015/10/26 15:07:07 skrll Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usb_subr.c,v 1.204 2015/11/08 23:25:17 joerg Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_compat_netbsd.h"
@@ -791,6 +791,24 @@
        return (USBD_NORMAL_COMPLETION);
 }
 
+static void
+usbd_serialnumber(device_t dv, usbd_device_handle dev)
+{
+       usb_device_descriptor_t *dd = &dev->ddesc;
+       char *serialnumber;
+
+       serialnumber = malloc(USB_MAX_ENCODED_STRING_LEN, M_USB, M_NOWAIT);
+       if (serialnumber == NULL)
+               return;
+       serialnumber[0] = '\0';
+       (void)usbd_get_string(dev, dd->iSerialNumber, serialnumber);
+       if (serialnumber[0]) {
+               prop_dictionary_set_cstring(device_properties(dv),
+                   "serialnumber", serialnumber);
+       }
+       free(serialnumber, M_USB);
+}
+
 static usbd_status
 usbd_attachwholedevice(device_t parent, usbd_device_handle dev, int port,
        int usegeneric)
@@ -827,6 +845,7 @@
                dev->subdevs[0] = dv;
                dev->subdevlen = 1;
                dev->nifaces_claimed = 1; /* XXX */
+               usbd_serialnumber(dv, dev);
        }
        return (USBD_NORMAL_COMPLETION);
 }
@@ -897,6 +916,9 @@
                                         usbd_ifprint, config_stdsubmatch);
                if (!dv)
                        continue;
+
+               usbd_serialnumber(dv, dev);
+
                /* claim */
                ifaces[i] = NULL;
                /* account for ifaces claimed by the driver behind our back */