From: Ian Pilcher <i.pilcher@comcast.net>
To: linux-hotplug@vger.kernel.org
Subject: Re: udev: rules using multiple sysfs directories
Date: Sat, 30 Apr 2005 00:44:56 +0000 [thread overview]
Message-ID: <d4uk3d$nos$1@sea.gmane.org> (raw)
In-Reply-To: <200504282041.56905.typo@mcflan.org>
Greg KH wrote:
> On Thu, Apr 28, 2005 at 03:28:31PM -0500, Ian Pilcher wrote:
>
>>This seems like a significant limitation for USB composite devices.
>
>
> No, all USB devices work like this.
If I'm correct about what can't be done, there's no way to write a rule
which identifies a device by vendor, product, and interface. It's
possible to do vendor and product, so the limitation only affects
composite devices.
>
> I'll try to make a udev rule that would work for this, can you send me
> the output of udevinfo for this:
> udevinfo -a /sys/class/tty/ttyUSB0
> udevinfo -a /sys/class/tty/ttyUSB1
ttyUSB0 (the modem):
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/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1/4-1:1.0/ttyUSB0':
BUS="usb-serial"
ID="ttyUSB0"
SYSFS{detach_state}="0"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1/4-1:1.0':
BUS="usb"
ID="4-1:1.0"
SYSFS{bAlternateSetting}=" 0"
SYSFS{bInterfaceClass}="ff"
SYSFS{bInterfaceNumber}="00"
SYSFS{bInterfaceProtocol}="ff"
SYSFS{bInterfaceSubClass}="ff"
SYSFS{bNumEndpoints}="03"
SYSFS{detach_state}="0"
SYSFS{iInterface}="04"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1':
BUS="usb"
ID="4-1"
SYSFS{bConfigurationValue}="1"
SYSFS{bDeviceClass}="00"
SYSFS{bDeviceProtocol}="00"
SYSFS{bDeviceSubClass}="00"
SYSFS{bMaxPower}="100mA"
SYSFS{bNumConfigurations}="1"
SYSFS{bNumInterfaces}=" 2"
SYSFS{bcdDevice}="0001"
SYSFS{bmAttributes}="c0"
SYSFS{detach_state}="0"
SYSFS{devnum}="4"
SYSFS{idProduct}="0112"
SYSFS{idVendor}="0f3d"
SYSFS{manufacturer}="AirPrime, Incorporated"
SYSFS{maxchild}="0"
SYSFS{product}="AirPrime CDMA Wireless PC Card"
SYSFS{speed}="12"
SYSFS{version}=" 1.10"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4':
BUS="usb"
ID="usb4"
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 2.6.9-5.EL.root.evdo ohci_hcd"
SYSFS{maxchild}="2"
SYSFS{product}="OHCI Host Controller"
SYSFS{serial}="0000:03:00.0"
SYSFS{speed}="12"
SYSFS{version}=" 1.10"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0':
BUS="pci"
ID="0000:03:00.0"
SYSFS{class}="0x0c0310"
SYSFS{detach_state}="0"
SYSFS{device}="0x5802"
SYSFS{irq}="11"
SYSFS{subsystem_device}="0x5802"
SYSFS{subsystem_vendor}="0x11c1"
SYSFS{vendor}="0x11c1"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0':
BUS="pci"
ID="0000:02:00.0"
SYSFS{class}="0x060700"
SYSFS{detach_state}="0"
SYSFS{device}="0xac55"
SYSFS{irq}="11"
SYSFS{subsystem_device}="0x0512"
SYSFS{subsystem_vendor}="0x1014"
SYSFS{vendor}="0x104c"
looking at the device chain at '/sys/devices/pci0000:00/0000:00:1e.0':
BUS="pci"
ID="0000:00:1e.0"
SYSFS{class}="0x060400"
SYSFS{detach_state}="0"
SYSFS{device}="0x2448"
SYSFS{irq}="0"
SYSFS{subsystem_device}="0x0000"
SYSFS{subsystem_vendor}="0x0000"
SYSFS{vendor}="0x8086"
looking at the device chain at '/sys/devices/pci0000:00':
BUS=""
ID="pci0000:00"
SYSFS{detach_state}="0"
ttyUSB1 (the "control port"):
looking at class device '/sys/class/tty/ttyUSB1':
SYSFS{dev}="188:1"
follow the class device's "device"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1/4-1:1.1/ttyUSB1':
BUS="usb-serial"
ID="ttyUSB1"
SYSFS{detach_state}="0"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1/4-1:1.1':
BUS="usb"
ID="4-1:1.1"
SYSFS{bAlternateSetting}=" 0"
SYSFS{bInterfaceClass}="ff"
SYSFS{bInterfaceNumber}="01"
SYSFS{bInterfaceProtocol}="ff"
SYSFS{bInterfaceSubClass}="ff"
SYSFS{bNumEndpoints}="02"
SYSFS{detach_state}="0"
SYSFS{iInterface}="04"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4/4-1':
BUS="usb"
ID="4-1"
SYSFS{bConfigurationValue}="1"
SYSFS{bDeviceClass}="00"
SYSFS{bDeviceProtocol}="00"
SYSFS{bDeviceSubClass}="00"
SYSFS{bMaxPower}="100mA"
SYSFS{bNumConfigurations}="1"
SYSFS{bNumInterfaces}=" 2"
SYSFS{bcdDevice}="0001"
SYSFS{bmAttributes}="c0"
SYSFS{detach_state}="0"
SYSFS{devnum}="4"
SYSFS{idProduct}="0112"
SYSFS{idVendor}="0f3d"
SYSFS{manufacturer}="AirPrime, Incorporated"
SYSFS{maxchild}="0"
SYSFS{product}="AirPrime CDMA Wireless PC Card"
SYSFS{speed}="12"
SYSFS{version}=" 1.10"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0/usb4':
BUS="usb"
ID="usb4"
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 2.6.9-5.EL.root.evdo ohci_hcd"
SYSFS{maxchild}="2"
SYSFS{product}="OHCI Host Controller"
SYSFS{serial}="0000:03:00.0"
SYSFS{speed}="12"
SYSFS{version}=" 1.10"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0/0000:03:00.0':
BUS="pci"
ID="0000:03:00.0"
SYSFS{class}="0x0c0310"
SYSFS{detach_state}="0"
SYSFS{device}="0x5802"
SYSFS{irq}="11"
SYSFS{subsystem_device}="0x5802"
SYSFS{subsystem_vendor}="0x11c1"
SYSFS{vendor}="0x11c1"
looking at the device chain at
'/sys/devices/pci0000:00/0000:00:1e.0/0000:02:00.0':
BUS="pci"
ID="0000:02:00.0"
SYSFS{class}="0x060700"
SYSFS{detach_state}="0"
SYSFS{device}="0xac55"
SYSFS{irq}="11"
SYSFS{subsystem_device}="0x0512"
SYSFS{subsystem_vendor}="0x1014"
SYSFS{vendor}="0x104c"
looking at the device chain at '/sys/devices/pci0000:00/0000:00:1e.0':
BUS="pci"
ID="0000:00:1e.0"
SYSFS{class}="0x060400"
SYSFS{detach_state}="0"
SYSFS{device}="0x2448"
SYSFS{irq}="0"
SYSFS{subsystem_device}="0x0000"
SYSFS{subsystem_vendor}="0x0000"
SYSFS{vendor}="0x8086"
looking at the device chain at '/sys/devices/pci0000:00':
BUS=""
ID="pci0000:00"
SYSFS{detach_state}="0"
Thanks!
--
====================================
Ian Pilcher i.pilcher@comcast.net
====================================
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prev parent reply other threads:[~2005-04-30 0:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-28 19:41 udev: rules using multiple sysfs directories James Macfarlane
2005-04-28 20:28 ` Ian Pilcher
2005-04-28 21:44 ` Kay Sievers
2005-04-29 0:59 ` James Macfarlane
2005-04-29 12:55 ` Ian Pilcher
2005-04-29 17:13 ` James Macfarlane
2005-04-29 18:15 ` Kay Sievers
2005-04-29 20:09 ` Greg KH
2005-04-30 0:44 ` Ian Pilcher [this message]
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