From mboxrd@z Thu Jan  1 00:00:00 1970
From: Oliver Comber <ocomber@cmedltd.com>
Date: Tue, 22 Mar 2005 11:20:25 +0000
Subject: Re: udev sysfs %s{filename} not working
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List-Id: <linux-hotplug.vger.kernel.org>
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To: linux-hotplug@vger.kernel.org

Hi Kay, thanks for the quick response!

On Tue, 2005-03-22 at 12:08 +0100, Kay Sievers wrote:

> > I'm using Ubuntu Warty, kernel 2.6.8.1-4-386, udev 0.026-1ubuntu5.
> 
> Is that udev version 026? 
I guess so, how can I tell for sure?  That was the output from
dpkg-query -W udev

> > My %s{product} bit seems to resolve to an empty string.
> 
> What does:
>   udevinfo -a -p /class/usb/lp0
> 
> You can use only the attributes that show up here.

I seem to have the product attribute listed here.  Are there any
restrictions on the sections of the output I can use?

The output of the command you mentioned above is:

follow the class device's "device"
  looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1f.2/usb1/1-1/1-1:1.0':
    BUS="usb"
    ID="1-1:1.0"
    SYSFS{bAlternateSetting}=" 0"
    SYSFS{bInterfaceClass}="07"
    SYSFS{bInterfaceNumber}="00"
    SYSFS{bInterfaceProtocol}="02"
    SYSFS{bInterfaceSubClass}="01"
    SYSFS{bNumEndpoints}="02"
    SYSFS{detach_state}="0"
    SYSFS{iInterface}="00"

  looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1f.2/usb1/1-1':
    BUS="usb"
    ID="1-1"
    SYSFS{bConfigurationValue}="1"
    SYSFS{bDeviceClass}="00"
    SYSFS{bDeviceProtocol}="00"
    SYSFS{bDeviceSubClass}="00"
    SYSFS{bMaxPower}="  2mA"
    SYSFS{bNumConfigurations}="1"
    SYSFS{bNumInterfaces}=" 1"
    SYSFS{bcdDevice}="0100"
    SYSFS{bmAttributes}="c0"
    SYSFS{detach_state}="0"
    SYSFS{devnum}="3"
    SYSFS{idProduct}="0021"
    SYSFS{idVendor}="04f9"
    SYSFS{manufacturer}="Brother"
    SYSFS{maxchild}="0"
    SYSFS{product}="HL-5140"
    SYSFS{serial}="E4J419784"
    SYSFS{speed}="12"
    SYSFS{version}=" 2.00"

  looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1f.2/usb1':
    BUS="usb"
    ID="usb1"
    SYSFS{bConfigurationValue}="1"
    SYSFS{bDeviceClass}="09"
    SYSFS{bDeviceProtocol}="00"
    SYSFS{bDeviceSubClass}="00"
    SYSFS{bMaxPower}="  0mA"
    SYSFS{bNumConfigurations}="1"
    SYSFS{bNumInterfaces}=" 1"
    SYSFS{bcdDevice}="0206"
    SYSFS{bmAttributes}="c0"
    SYSFS{detach_state}="0"
    SYSFS{devnum}="1"
    SYSFS{idProduct}="0000"
    SYSFS{idVendor}="0000"
    SYSFS{manufacturer}="Linux 2.6.8.1-4-386 uhci_hcd"
    SYSFS{maxchild}="2"
    SYSFS{product}="Intel Corp. 82801BA/BAM USB (Hub #1)"
    SYSFS{serial}="0000:00:1f.2"
    SYSFS{speed}="12"
    SYSFS{version}=" 1.10"

  looking at the device chain at '/sys/devices/pci0000:00/0000:00:1f.2':
    BUS="pci"
    ID="0000:00:1f.2"
    SYSFS{class}="0x0c0300"
    SYSFS{detach_state}="0"
    SYSFS{device}="0x2442"
    SYSFS{irq}="185"
    SYSFS{subsystem_device}="0x010e"
    SYSFS{subsystem_vendor}="0x1028"
    SYSFS{vendor}="0x8086"

  looking at the device chain at '/sys/devices/pci0000:00':
    BUS=""
    ID="pci0000:00"
    SYSFS{detach_state}="0"


Thanks very much!
-Oli



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