[ale] udev rules for USB
Chris Fowler
cfowler at outpostsentinel.com
Thu Nov 21 17:41:20 EST 2013
I'm writing a udev rule that I want to run only when something is
plugged into a USB port
*ACTION!="add", GOTO="end01"
BUS=="usb",RUN+="/lib/libexec/usb-load %b %s{idVendor} %s{idProduct}",
$attr{idVendor}, $s{idProduct}
SUBSYSTEM!="net", BUS!="usb", GOTO="end01"
SYSFS{idProduct}=="9700", SYSFS{idVendor}=="0fe6",
KERNEL=="*", RUN+="/sbin/modprobe dm9601"
LABEL="end01"
*
My goal is to load the necessary modules on this system. The problem is
that the perl script 'usb-load' is not executed. I can easily remove
the BUS=="usb" part and have it run on all devices and it can look at
devpath to see USB. The problem is that this would be cpu intensive.
I want it to execute whenever a usb-serial, usb-modem, or usb-storage
device is attached. In some cases the kernel does not know that a
certain vId and pId is attached to a driver and I have to load it
myself. You see that example where I am having to load the dm9601
driver for a usb-net device. I see the same for usb-storage. Some USB
sticks the kernel loads usb-storage for some it does not know to. If I
capture the vId and pId I can then look it up and load up the correct one.
Chris
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