kern/152310: [uart] [hang] Serial I/O hangs in FreeBSD 8.x

[Stacy Millions]

The following reply was made to PR kern/152310; it has been noted by GNATS.

From: Stacy Millions <stacy at Millions.Ca>
To: bug-followup at FreeBSD.org
Cc:  
Subject: Re: kern/152310: [uart] [hang] Serial I/O hangs in FreeBSD 8.x
Date: Sat, 12 Feb 2011 21:43:02 -0700

 I have a similar problem with ntpd talking to an Oncore GPS. It will run 
 for a few hours or a few days, but then the serial port will freeze up. 
 Only a reboot will reset things. This hardware combination worked fine 
 for years running 6.x, it was only after I upgraded to 8.1 that I had 
 this problem.
 
 I have just built a kernel without the uart driver in the hopes that 
 unloading and loading the module will allow me to reset things without 
 rebooting.
 
 uname:
 FreeBSD oak.millions.ca 8.1-RELEASE-p2 FreeBSD 8.1-RELEASE-p2 #0: Thu 
 Dec  2 11:50:22 MST 2010 
 root at buildhost.millions.ca:/usr/obj/usr/src/sys/GENERIC  amd64
 
 dmesg:
 uart0: <16550 or compatible> port 0x3f8-0x3ff irq 4 flags 0x10 on acpi0
 uart0: [FILTER]
 
 
 -stacy