RE: Question about Hot device Identity

["Guo, Min" <min.guo@intel.com>]

 I download the linux2.5.73 and use USB CDROM to do the testing.
ls /sysfs
> block  bus  cdev  class  devices  firmware
ls /sysfs/class
>firmware  input  net  pcmcia_socket  scsi_device  scsi_host  tty  usb
ls /sysfs/block
> fd0  hda  initrd  sda
ls /sysfs/devices/pci0
>0000:00:00.0  0000:00:02.0  0000:00:0f.0  0000:00:0f.2  power
0000:00:00.1  0000:00:03.0  0000:00:0f.1  name
ls /sysfs/devices/pci0/0000\:00\:0f.2/
>class   irq   power     subsystem_device  vendor
device  name  resource  subsystem_vendor


0000:00:0f.2 is my USB controller.
So ,in such environment, how to configure DEVPATH in test file?
I write it as DEVPATH=/devices/pci0/00:0f.0/, but I don't think it is right, because there are no 
usb device in the directory, if so, does it means Udev does not support the USB cdrom?
If not, could you please tell me how to configure the USB BLOCK device's DEVPATH in test file?

Another question is whether 2.5.73 supports USB mice?

Sorry to ask you so many questions, because I can not run the Udev correctly till now,
thank you very much!

Thanks
Guo Min

-----Original Message-----
From: Greg KH [mailto:greg@kroah.com]
Sent: Wednesday, June 25, 2003 10:34 AM
To: Guo, Min
Cc: linux-hotplug-devel@lists.sourceforge.net
Subject: Re: Question about Hot device Identity


On Wed, Jun 25, 2003 at 10:24:43AM +0800, Guo, Min wrote:
> Oh, could you please give me an example USB device that udev supported
> now?

Any usb device that uses the usb major number.  This includes usb
printers, scanners, and a bunch of other assorted devices.

> I tried another USB cdrom, I found there are no dev  file in
> /sysfs/class directory.

Block devices also work just fine.  So this should work as long as you
have something created in sys/block for your cdrom drive.

> Whether I need patch
> kernel.org/pub/linux/kernel/people/gregkh/misc/kobject-hotplug-?-2.5.67.patch
> for USB cdrom?   

If you are using the 2.5.67 kernel, yes.  I'd recommend 2.5.73, and you
will not need it.

> I would like to develop the test suite for Udev firstly, thank you for
> your kind help.

Great, that would be greatly appreciated.

thanks,

greg k-h


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