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Bug 230896

Summary: USB to serial convertor device name
Product: [Fedora] Fedora Reporter: Bart Vanbrabant <bart.vanbrabant>
Component: kernelAssignee: Kernel Maintainer List <kernel-maint>
Status: CLOSED RAWHIDE QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: rawhideCC: david.hagood, wtogami
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2007-03-15 21:59:33 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Description Flags
Patch from Oliver none

Description Bart Vanbrabant 2007-03-04 11:45:10 UTC
Description of problem:
Since the rawhide kernel moved from 2.6.20 to a pre 2.6.21 version I can't use a
programmer with an usb to serial converter chip anymore. It used to attach to
the device /dev/ttyUSB0 but now I get ttyUSB132 or ttyUSB148. When I try to use
the device I get an error that the device node doesn't exist.

Version-Release number of selected component (if applicable):
The rawhide kernel from yesterday: 2.6.20-1.2962.fc7PAE

Output from dmesg when attaching the device and removing it again:
[root@duvel ~]# dmesg 
usb 1-3: new full speed USB device using ohci_hcd and address 5
PM: Adding info for usb:1-3
PM: Adding info for No Bus:usbdev1.5_ep00
usb 1-3: configuration #1 chosen from 1 choice
PM: Adding info for usb:1-3:1.0
ftdi_sio 1-3:1.0: FTDI USB Serial Device converter detected
drivers/usb/serial/ftdi_sio.c: Detected FT232BM
PM: Adding info for usb-serial:ttyUSB148
PM: Adding info for No Bus:ttyUSB148
usb 1-3: FTDI USB Serial Device converter now attached to ttyUSB148
PM: Adding info for No Bus:usbdev1.5_ep81
PM: Adding info for No Bus:usbdev1.5_ep02
PM: Adding info for No Bus:usbdev1.5
usb 1-3: USB disconnect, address 5
PM: Removing info for No Bus:usbdev1.5_ep81
PM: Removing info for No Bus:usbdev1.5_ep02
PM: Removing info for No Bus:ttyUSB148
ftdi_sio ttyUSB148: FTDI USB Serial Device converter now disconnected from ttyUSB148
PM: Removing info for usb-serial:ttyUSB148
ftdi_sio 1-3:1.0: device disconnected
PM: Removing info for usb:1-3:1.0
PM: Removing info for No Bus:usbdev1.5
PM: Removing info for No Bus:usbdev1.5_ep00
PM: Removing info for usb:1-3

Trying to open the device:
[root@duvel ~]# cat /dev/ttyUSB148 
cat: /dev/ttyUSB148: No such device

Comment 2 david.hagood 2007-03-07 02:22:56 UTC
I am seeing this as well.

Comment 3 Bart Vanbrabant 2007-03-15 21:59:33 UTC
This is fixed in the current rawhide kernel version.