Another UDEV question.

Another UDEV question.

[reg]

Ive been trying to get several devices working (again) with
udev.  Greg pointed me in the right direction on the first,
and I was able to get the second working,- but there is something
here that I dont understand.

On the first, a usb key, the udevinfo showed the device twice,
once as a scsi device, once as a usb.  Trying to specify the device
with the 'model' string and the scsi info didnt work, with the 
'model' and the 'usb' did.  I have no idea WHY the one worked and
not the other.

On the second, a 2-1/2" drive in a small usb 'box' the udevinfo
shows the device again twice, once as

  looking at the device chain at '/sys/devices/pci0000:00/0000:00:0d.0/usb3/3-1
/3-1:2.0/host3/3:0:0:0':
    BUS="scsi"
    ID="3:0:0:0"
    SYSFS{detach_state}="0"
    SYSFS{type}="0"
    SYSFS{max_sectors}="240"
    SYSFS{device_blocked}="0"
    SYSFS{queue_depth}="1"
    SYSFS{scsi_level}="3"
    SYSFS{vendor}="IC25N020"
    SYSFS{model}="ATCS04-0        "
    SYSFS{rev}="CA2O"
    SYSFS{online}="1"

and then again as

  looking at the device chain at '/sys/devices/pci0000:00/0000:00:0d.0/usb3/3-1
':
    BUS="usb"
    ID="3-1"
    SYSFS{detach_state}="0"
    SYSFS{bNumInterfaces}=" 1"
    SYSFS{bConfigurationValue}="2"
    SYSFS{bmAttributes}="c0"
    SYSFS{bMaxPower}=" 98mA"
    SYSFS{idVendor}="0c0b"
    SYSFS{idProduct}="b001"
    SYSFS{bcdDevice}="1110"
    SYSFS{bDeviceClass}="00"
    SYSFS{bDeviceSubClass}="00"
    SYSFS{bDeviceProtocol}="00"
    SYSFS{bNumConfigurations}="1"
    SYSFS{speed}="12"
    SYSFS{manufacturer}="DMI"
    SYSFS{product}="USB 2.0 Storage Adaptor"
    SYSFS{serial}="0B0201420527B284"

and using the vendor or product fields I can get udev to see EITHER
of these.

Is this just hit or miss?
Is there someone behind the curtain that Im not seeing?
Just trying to understand whats going on.

-- 
                                        Reg.Clemens
                                        reg@dwf.com







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Re: Another UDEV question.

[Greg KH]

On Wed, Mar 03, 2004 at 02:16:05PM -0700, reg@dwf.com wrote:
> Ive been trying to get several devices working (again) with
> udev.  Greg pointed me in the right direction on the first,
> and I was able to get the second working,- but there is something
> here that I dont understand.
> 
> On the first, a usb key, the udevinfo showed the device twice,
> once as a scsi device, once as a usb.  Trying to specify the device
> with the 'model' string and the scsi info didnt work, with the 
> 'model' and the 'usb' did.  I have no idea WHY the one worked and
> not the other.

Hm, I wonder if we are racing the kernel again :(

Can you build udev with:
	make clean
	make USE_LOG=true DEBUG=true

Then, with the device plugged in, can you run:
	./udevtest /block/sda

And send us the output.  If that works, and shows us the proper name
(based on the model) then I think our race is here again :(

thanks,

greg k-h


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