Bug 28802

Summary: 3com Performance Pro modem conflicts with isa serial ports and/or second UHCI usb controller.
Product: Base System Reporter: Andrew Lankford <arlankfo>
Component: i386Assignee: joe <joe>
Status: Closed FIXED    
Severity: Affects Only Me    
Priority: Normal    
Version: 4.3-RELEASE   
Hardware: Any   
OS: Any   

Description Andrew Lankford 2001-07-08 02:30:01 UTC 
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".

Fix: 

The modem works fine whenever the builtin serial ports are disabled and
compiled out of the kernel entirely.
Comment 1 Kris Kennaway freebsd_committer freebsd_triage 2003-07-18 01:39:51 UTC 
Responsible Changed
From-To: freebsd-bugs->joe

Assign to USB maintaineri
Comment 2 iedowse freebsd_committer freebsd_triage 2004-11-03 09:52:09 UTC 
State Changed
From-To: open->feedback


Does this problem still occur with more recent FreeBSD releases?
Comment 3 iedowse freebsd_committer freebsd_triage 2004-11-04 02:12:19 UTC 
State Changed
From-To: feedback->closed


Mail to submitter bounces.