PR/57326 CVS commit: [netbsd-9] src/sys/dev/usb

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

The following reply was made to PR kern/57326; it has been noted by GNATS.

From: "Martin Husemann" <martin%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/57326 CVS commit: [netbsd-9] src/sys/dev/usb
Date: Tue, 1 Aug 2023 13:46:18 +0000

 Module Name:	src
 Committed By:	martin
 Date:		Tue Aug  1 13:46:18 UTC 2023
 
 Modified Files:
 	src/sys/dev/usb [netbsd-9]: xhci.c xhcivar.h
 
 Log Message:
 Pull up following revision(s) (requested by riastradh in ticket #1687):
 
 	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 -r1.107.2.11 -r1.107.2.12 src/sys/dev/usb/xhci.c
 cvs rdiff -u -r1.11.4.3 -r1.11.4.4 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.