Module Name: src
Committed By: jmcneill
Date: Sun Oct 10 20:14:09 UTC 2021
Modified Files:
src/sys/dev/usb: usb.c
Log Message:
usb: usb_event_thread: remove delay at startup for USB >= 2.0 HCs
The delay at the start of usb_event_thread is meant to slow down EHCI
companion controllers. Skip the 500ms delay if the bus that owns this
thread is USB >= 2.0 since those are never companions.
To generate a diff of this commit:
cvs rdiff -u -r1.197 -r1.198 src/sys/dev/usb/usb.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/usb/usb.c
diff -u src/sys/dev/usb/usb.c:1.197 src/sys/dev/usb/usb.c:1.198
--- src/sys/dev/usb/usb.c:1.197 Sun Sep 26 01:16:09 2021
+++ src/sys/dev/usb/usb.c Sun Oct 10 20:14:09 2021
@@ -1,4 +1,4 @@
-/* $NetBSD: usb.c,v 1.197 2021/09/26 01:16:09 thorpej Exp $ */
+/* $NetBSD: usb.c,v 1.198 2021/10/10 20:14:09 jmcneill Exp $ */
/*
* Copyright (c) 1998, 2002, 2008, 2012 The NetBSD Foundation, Inc.
@@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.197 2021/09/26 01:16:09 thorpej Exp $");
+__KERNEL_RCSID(0, "$NetBSD: usb.c,v 1.198 2021/10/10 20:14:09 jmcneill Exp $");
#ifdef _KERNEL_OPT
#include "opt_usb.h"
@@ -724,7 +724,9 @@ usb_event_thread(void *arg)
* know how to synchronize the creation of the threads so it
* will work.
*/
- usb_delay_ms(bus, 500);
+ if (bus->ub_revision < USBREV_2_0) {
+ usb_delay_ms(bus, 500);
+ }
/* Make sure first discover does something. */
mutex_enter(bus->ub_lock);
