diff options
author | CHENG Renquan <rqcheng@smu.edu.sg> | 2009-11-21 12:28:52 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-12-11 14:55:26 -0500 |
commit | 0c7a2b72746a96f999fd2728520d03d94879be69 (patch) | |
tree | 30c4d09a7d142c46177ced1c8600a7d7f6bcde25 /Documentation/ABI/testing/sysfs-bus-usb | |
parent | 5791e10341f8bf284bd16eb0949cbeed91c9dac8 (diff) |
USB: add remove_id sysfs attr for usb drivers
Accroding commit 0994375e, which is adding remove_id sysfs attr
for pci drivers, for management tools dynamically bind/unbind
a pci/usb devices to a specified drivers; with this patch,
the management tools can be simplied.
And the original code didn't handle the failure of
usb_create_newid_file, fixed in this patch.
Signed-off-by: CHENG Renquan <rqcheng@smu.edu.sg>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/ABI/testing/sysfs-bus-usb')
-rw-r--r-- | Documentation/ABI/testing/sysfs-bus-usb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb index 7772928ee48f..deb6b489e4e5 100644 --- a/Documentation/ABI/testing/sysfs-bus-usb +++ b/Documentation/ABI/testing/sysfs-bus-usb | |||
@@ -144,3 +144,16 @@ Description: | |||
144 | 144 | ||
145 | Write a 1 to force the device to disconnect | 145 | Write a 1 to force the device to disconnect |
146 | (equivalent to unplugging a wired USB device). | 146 | (equivalent to unplugging a wired USB device). |
147 | |||
148 | What: /sys/bus/usb/drivers/.../remove_id | ||
149 | Date: November 2009 | ||
150 | Contact: CHENG Renquan <rqcheng@smu.edu.sg> | ||
151 | Description: | ||
152 | Writing a device ID to this file will remove an ID | ||
153 | that was dynamically added via the new_id sysfs entry. | ||
154 | The format for the device ID is: | ||
155 | idVendor idProduct. After successfully | ||
156 | removing an ID, the driver will no longer support the | ||
157 | device. This is useful to ensure auto probing won't | ||
158 | match the driver to the device. For example: | ||
159 | # echo "046d c315" > /sys/bus/usb/drivers/foo/remove_id | ||