linux-hotplug.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
* How can I specify a specific 'sub-device' of a device for udev naming?
@ 2004-03-01  6:08 Jonathan Steinert
  2004-03-01 12:36 ` How can I specify a specific 'sub-device' of a device for udev Kay Sievers
                   ` (6 more replies)
  0 siblings, 7 replies; 8+ messages in thread
From: Jonathan Steinert @ 2004-03-01  6:08 UTC (permalink / raw)
  To: linux-hotplug

Morning everybody,

I'm trying to find how I can write a rule which allows me to say "The 
usb-serial bus interface inside the usb device with a sysfs serial of 
"304087" should be named "foo"

I'll paste my udevinfo output for the device in question (A Belkin USB 
to serial dongle) at the bottom, but I am running into a similar issue 
with my Griffin Powermate.

The rule I came up with, which does not work nor seem correct in the 
first place is:

BUS="usb-serial", SYSFS{serial}="304087", NAME="foo"

Since this does not work, I am asuming that the sysfs attributes to not 
trickle down a driver chain for matching in more specific devices.

This does leave me puzzled about two things:

1) Why does udev have a flag to crawl up the sysfs tree (Asuming my 
observations of udev are correct) but no flag to show the attributes of 
only the device I specify? or only 'n' layers down for that matter?

2) How can I write a rule to match the usb-serial interface of a usb 
device with a particular serial number?

I have no idea what to call this act, apart from 'walking' the sysfs 
tree when checking the rules, so after reading all the documentation 
with udev that I noticed, and all of the messages on the list that I 
thought might be related I've come up with nothing.

Can anyone fill me in on this, possibly telling me what this is called, 
and what I am getting wrong?

Thanks much,

Jonathan Steinert


root@yuumi:/dev# udevinfo -a -p /sys/class/tty/ttyUSB0

device '/sys/class/tty/ttyUSB0' has major:minor 188:0
  looking at class device '/sys/class/tty/ttyUSB0':
    SYSFS{dev}="188:0"

follow the class device's "device"
  looking at the device chain at 
'/sys/devices/pci0000:00/0000:00:1d.2/usb2/2-1/2-1:1.0/ttyUSB0':
    BUS="usb-serial"
    ID="ttyUSB0"
    SYSFS{detach_state}="0"

  looking at the device chain at 
'/sys/devices/pci0000:00/0000:00:1d.2/usb2/2-1/2-1:1.0':
    BUS="usb"
    ID="2-1:1.0"
    SYSFS{detach_state}="0"
    SYSFS{bInterfaceNumber}="00"
    SYSFS{bAlternateSetting}=" 0"
    SYSFS{bNumEndpoints}="03"
    SYSFS{bInterfaceClass}="ff"
    SYSFS{bInterfaceSubClass}="ff"
    SYSFS{bInterfaceProtocol}="ff"
    SYSFS{iInterface}="00"

  looking at the device chain at 
'/sys/devices/pci0000:00/0000:00:1d.2/usb2/2-1':
    BUS="usb"
    ID="2-1"
    SYSFS{detach_state}="0"
    SYSFS{bNumConfigurations}="1"
    SYSFS{bNumInterfaces}=" 1"
    SYSFS{bConfigurationValue}="1"
    SYSFS{bmAttributes}="a0"
    SYSFS{bMaxPower}="100mA"
    SYSFS{idVendor}="050d"
    SYSFS{idProduct}="0109"
    SYSFS{bcdDevice}="0102"
    SYSFS{bDeviceClass}="00"
    SYSFS{bDeviceSubClass}="00"
    SYSFS{bDeviceProtocol}="00"
    SYSFS{speed}="12"
    SYSFS{manufacturer}="Belkin USB PDA Adapter"
    SYSFS{product}="Belkin Components"
    SYSFS{serial}="304087"

  looking at the device chain at 
'/sys/devices/pci0000:00/0000:00:1d.2/usb2':
    BUS="usb"
    ID="usb2"
    SYSFS{detach_state}="0"
    SYSFS{bNumInterfaces}=" 1"
    SYSFS{bConfigurationValue}="1"
    SYSFS{bmAttributes}="40"
    SYSFS{bMaxPower}="  0mA"
    SYSFS{idVendor}="0000"
    SYSFS{idProduct}="0000"
    SYSFS{bcdDevice}="0206"
    SYSFS{bDeviceClass}="09"
    SYSFS{bDeviceSubClass}="00"
    SYSFS{bDeviceProtocol}="00"
    SYSFS{bNumConfigurations}="1"
    SYSFS{speed}="12"
    SYSFS{manufacturer}="Linux 2.6.3 uhci_hcd"
    SYSFS{product}="UHCI Host Controller"
    SYSFS{serial}="0000:00:1d.2"

  looking at the device chain at '/sys/devices/pci0000:00/0000:00:1d.2':
    BUS="pci"
    ID="0000:00:1d.2"
    SYSFS{detach_state}="0"
    SYSFS{vendor}="0x8086"
    SYSFS{device}="0x2487"
    SYSFS{subsystem_vendor}="0x8086"
    SYSFS{subsystem_device}="0x4541"
    SYSFS{class}="0x0c0300"
    SYSFS{irq}="11"

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



-------------------------------------------------------
SF.Net is sponsored by: Speed Start Your Linux Apps Now.
Build and deploy apps & Web services for Linux with
a free DVD software kit from IBM. Click Now!
http://ads.osdn.com/?ad_id\x1356&alloc_id438&op=click
_______________________________________________
Linux-hotplug-devel mailing list  http://linux-hotplug.sourceforge.net
Linux-hotplug-devel@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/linux-hotplug-devel

^ permalink raw reply	[flat|nested] 8+ messages in thread
end of thread, other threads:[~2004-03-04 19:53 UTC | newest]

Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2004-03-01  6:08 How can I specify a specific 'sub-device' of a device for udev naming? Jonathan Steinert
2004-03-01 12:36 ` How can I specify a specific 'sub-device' of a device for udev Kay Sievers
2004-03-01 16:23 ` Jonathan Steinert
2004-03-01 17:00 ` Kay Sievers
2004-03-01 23:56 ` Jonathan Steinert
2004-03-02  0:37 ` How can I specify a specific 'sub-device' of a device for udev naming? Kay Sievers
2004-03-04  7:19 ` How can I specify a specific 'sub-device' of a device for udev Jonathan Steinert
2004-03-04 19:53 ` How can I specify a specific 'sub-device' of a device for udev naming? Greg KH

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).