CVS commit: [netbsd-8] src/sys/dev/usb

["Martin Husemann" <martin%netbsd.org@localhost>]

Module Name:    src
Committed By:   martin
Date:           Tue Aug  1 13:48:15 UTC 2023

Modified Files:
        src/sys/dev/usb [netbsd-8]: xhci.c xhcivar.h

Log Message:
Pull up following revision(s) (requested by riastradh in ticket #1869):

        sys/dev/usb/xhci.c: revision 1.176
        sys/dev/usb/xhcivar.h: revision 1.23

xhci(4): Defer root intr xfers while polling.

Root intr xfers require taking adaptive locks, which is forbidden
while polling.

This is not great -- any USB transfer completion callbacks might try
to take adaptive locks, not just uhub_intr, and that will always
causes trouble.  We get lucky with ukbd_intr because it's not
MP-safe, so it relies only on the kernel lock (a spin lock) anyway.
But this change brings xhci in line with ehci.

PR kern/57326


To generate a diff of this commit:
cvs rdiff -u -r1.72.2.14 -r1.72.2.15 src/sys/dev/usb/xhci.c
cvs rdiff -u -r1.7.6.2 -r1.7.6.3 src/sys/dev/usb/xhcivar.h

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