diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-usb')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-bus-usb | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index 1430f584b26..614d451cee4 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb @@ -50,13 +50,19 @@ Description: This may allow the driver to support more hardware than was included in the driver's static device ID support table at compile time. The format for the device ID is: - idVendor idProduct bInterfaceClass. + idVendor idProduct bInterfaceClass RefIdVendor RefIdProduct The vendor ID and device ID fields are required, the - interface class is optional. + rest is optional. The Ref* tuple can be used to tell the + driver to use the same driver_data for the new device as + it is used for the reference device. Upon successfully adding an ID, the driver will probe for the device and attempt to bind to it. For example: # echo "8086 10f5" > /sys/bus/usb/drivers/foo/new_id + Here add a new device (0458:7045) using driver_data from + an already supported device (0458:704c): + # echo "0458 7045 0 0458 704c" > /sys/bus/usb/drivers/foo/new_id + Reading from this file will list all dynamically added device IDs in the same format, with one entry per line. For example: |