On 7/26/07, Dan Nicholson <[EMAIL PROTECTED]> wrote:
> The 2.6.22 kernel (maybe 2.6.21 too, didn't check) has an option
> CONFIG_USB_DEVICE_CLASS that's marked as deprecated. The help text
> states that it is unnecessary if the following udev rule is used:
>
> SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", \
> NAME="bus/usb/$env{BUSNUM}/$env{DEVNUM}"
>
> I checked the SuSE rules in udev-111, and this is in addition to the
> existing usb_device rule:
>
> SUBSYSTEM=="usb_device", PROGRAM="/bin/sh -c 'X=%k; X=$${X#usbdev};
> B=$${X%%%%.*} D=$${X#*.}; echo bus/usb/$$B/$$D'", NAME="%c"
>
> Does anyone have a problem if I add that to our rules?
Actually, it seems that they're the same rule, but the kernel no
longer supplies the usb_device subsystem is removed in 2.6.22. Here's
a relevant bug:
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=248916#c10
So, the new rule can replace the old one depending on whether
CONFIG_USB_DEVICE_CLASS is set. I think both rules should be there so
that our rules stay compatible whether this setting is Y or N. Also,
leaving the older rule there means you get /dev/bus/usb nodes if you
run an older kernel.
Thoughts?
--
Dan
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