PR/57662 CVS commit: src/sys/dev/usb

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

The following reply was made to PR port-i386/57662; it has been noted by GNATS.

From: "Taylor R Campbell" <riastradh%netbsd.org@localhost>
To: gnats-bugs%gnats.NetBSD.org@localhost
Cc: 
Subject: PR/57662 CVS commit: src/sys/dev/usb
Date: Sat, 28 Oct 2023 21:18:32 +0000

 Module Name:	src
 Committed By:	riastradh
 Date:		Sat Oct 28 21:18:32 UTC 2023
 
 Modified Files:
 	src/sys/dev/usb: ehci.c
 
 Log Message:
 ehci(4): Fix bug causing missed wakeups since ehci.c 1.308.
 
 For reasons beyond me now, I used cv_signal on the same cv that is
 used to wait for the doorbell to be available _and_ to wait for the
 host controller to acknowledge the doorbell.  Which means when the
 host controller acknowledges the doorbell, we might wake some thread
 waiting for the doorbell to be available -- and leave the thread
 waiting for the doorbell acknowledgment hanging indefinitely.
 
 PR port-i386/57662
 
 XXX pullup-10
 
 
 To generate a diff of this commit:
 cvs rdiff -u -r1.318 -r1.319 src/sys/dev/usb/ehci.c
 
 Please note that diffs are not public domain; they are subject to the
 copyright notices on the relevant files.