Bug 230896 - USB to serial convertor device name
USB to serial convertor device name
Status: CLOSED RAWHIDE
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
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All Linux
medium Severity medium
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Assigned To: Kernel Maintainer List
Brian Brock
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Depends On:
Blocks:
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Reported: 2007-03-04 06:45 EST by Bart Vanbrabant
Modified: 2007-11-30 17:11 EST (History)
2 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Environment:
Last Closed: 2007-03-15 17:59:33 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
Patch from Oliver (612 bytes, patch)
2007-03-04 13:56 EST, Pete Zaitcev
no flags Details | Diff

  None (edit)
Description Bart Vanbrabant 2007-03-04 06:45:10 EST
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 2007-03-06 21:22:56 EST
I am seeing this as well.
Comment 3 Bart Vanbrabant 2007-03-15 17:59:33 EDT
This is fixed in the current rawhide kernel version.

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