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Date: Sat, 7 Jul 2001 18:29:41 -0700 (PDT)
From: Andrew Lankford <arlankfo@mindspring.com>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: i386/28802: 3com Performance Pro modem conflicts with isa serial ports and/or second UHCI usb controller.
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>Number:         28802
>Category:       i386
>Synopsis:       3com Performance Pro modem conflicts with isa serial ports and/or second UHCI usb controller.
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sat Jul 07 18:30:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Andrew Lankford
>Release:        FreeBSD 4.3-RELEASE
>Organization:
>Environment:
FreeBSD  4.3-RELEASE FreeBSD 4.3-RELEASE #0: Sat Apr 21 10:54:49 GMT 2001     jk
h@narf.osd.bsdi.com:/usr/src/sys/compile/GENERIC  i386
>Description:
device probe entries from GENERIC kernel:
sio0: <3COM PCI FaxModem> port 0xd400-0xd407 irq 9 at device 13.0 on pci1
sio0: moving to sio4
sio4: type 16550A
sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0
sio0: type 16550A
sio1 at port 0x2f8-0x2ff irq 3 on isa0
sio1: type 16550A

cu -l /dev/cuaa4 -s 115200 will either return a "Line in use" or will
freeze the system.

The modem works fine whenever the builtin serial ports are disabled and
compiled out of the kernel entirely; however, another problem presents itself:

uhci1: <Intel 82801BA/BAM (ICH2) USB controller USB-B> port 0xb000-0xb01f irq 9 at device 31.4 on pci0
uhci1: Could not allocate irq
device_probe_and_attach: uhci1 attach returned 6


Guess my pci modem is the proverbial "bull in the china shop". 

>How-To-Repeat:

>Fix:
The modem works fine whenever the builtin serial ports are disabled and
compiled out of the kernel entirely.
>Release-Note:
>Audit-Trail:
>Unformatted:

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