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SubjectRe: usbmc seems broken
On Thu, Feb 04, 2010 at 08:32:21AM +0000, Neil Kalo wrote:
> Upgraded to: 2.6.32.7-37.fc12.i686.PAE
> Still no joy. Plugging in the meter gives:
>
> Feb 4 08:27:04 localhost kernel: usb 4-1: new full speed USB device
> using ohci_hcd and address 2
> Feb 4 08:27:04 localhost kernel: usb 4-1: New USB device found,
> idVendor=05e6, idProduct=2100
> Feb 4 08:27:04 localhost kernel: usb 4-1: New USB device strings:
> Mfr=2, Product=3, SerialNumber=1
> Feb 4 08:27:04 localhost kernel: usb 4-1: Product: 2100 Multimeter
> Feb 4 08:27:04 localhost kernel: usb 4-1: Manufacturer: KEITHLEY INSTRUMENTS
> Feb 4 08:27:04 localhost kernel: usb 4-1: SerialNumber: 1160791
> Feb 4 08:27:04 localhost kernel: usb 4-1: configuration #1 chosen from 1 choice
> Feb 4 08:27:04 localhost kernel: usbcore: registered new interface
> driver usbtmc
>
> But "cat /dev/usbtmc0" gives:
> cat: /dev/usbtmc0: Connection timed out
>
> And in the logs:
> Feb 4 08:27:35 localhost kernel: usbtmc 4-1:1.0: Unable to read data,
> error -110
>
> The very old driver still works:
>
> Feb 4 08:31:02 localhost kernel: USBTMC: MKDEV
> Feb 4 08:31:02 localhost kernel: USBTMC: CDEV_ADD f900000 1
> Feb 4 08:31:02 localhost kernel: usbcore: registered new interface
> driver USBTMC
>
> [root@mc22 usbtmc-module]# cat /dev/usbtmc0
> Minor Number Manufacturer Product Serial Number
> 001 KEITHLEY INSTRUMENTS 2100 Multimeter 1160791

Care to try to figure out what is going wrong here and send a patch?

thanks,

greg k-h


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