CVS commit: src/sys/dev/usb

["Taylor R Campbell" <riastradh%netbsd.org@localhost>]

Module Name:    src
Committed By:   riastradh
Date:           Sun Oct  5 20:04:30 UTC 2025

Modified Files:
        src/sys/dev/usb: usb_subr.c usbdivar.h xhci.c

Log Message:
usb(9): Record config index, not just number, in struct usbd_device.

The index is a zero-based index in [0, bNumConfigurations), or -1 for
unconfigured.

The number is an arbitrary value of a config descriptor's
bConfigurationValue field, or 0 for unconfigured -- with the tricky
caveat that bConfigurationValue might also be 0.

Preparation for fixing:

PR kern/59185: panic over KASSERTMSG(dev->ud_ifaces == NULL) on Dell
Latitude 7490

PR kern/59624: Booting NetBSD-11 from USB on my Dell machine panics
and hangs

PR kern/57447: HEAD fails to probe USB devices and fails to boot up

Reported-by: syzbot+017911f90e0f9766bc71%syzkaller.appspotmail.com@localhost
https://syzkaller.appspot.com/bug?id=e6d4449a128e73a9a88100a5cc833e5cae9fecae


To generate a diff of this commit:
cvs rdiff -u -r1.279 -r1.280 src/sys/dev/usb/usb_subr.c
cvs rdiff -u -r1.139 -r1.140 src/sys/dev/usb/usbdivar.h
cvs rdiff -u -r1.190 -r1.191 src/sys/dev/usb/xhci.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.