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authorOliver Neukum <oliver@neukum.org>2010-01-15 19:33:03 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2010-03-02 17:53:23 -0500
commitef955341f692475236f0fbe6853f49337dff77a5 (patch)
tree782c8677ba375ada558578fefe5321c84c5b4dff /Documentation/ABI/testing/sysfs-bus-usb
parent5d3987796c7a747e5ed3ded1eb64a9632d52a1a4 (diff)
USB: Export QUIRK_RESET_MORPHS through sysfs
Some devices which use mode switching revert to their primary mode as they are reset. They must not be reset for error handling. As user spaces makes the switch it also has to tell the kernel that a device is quirky. Signed-off-by: Oliver Neukum <oliver@neukum.org> 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-usb11
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb
index a07c0f366f91..a986e9bbba3d 100644
--- a/Documentation/ABI/testing/sysfs-bus-usb
+++ b/Documentation/ABI/testing/sysfs-bus-usb
@@ -159,3 +159,14 @@ Description:
159 device. This is useful to ensure auto probing won't 159 device. This is useful to ensure auto probing won't
160 match the driver to the device. For example: 160 match the driver to the device. For example:
161 # echo "046d c315" > /sys/bus/usb/drivers/foo/remove_id 161 # echo "046d c315" > /sys/bus/usb/drivers/foo/remove_id
162
163What: /sys/bus/usb/device/.../avoid_reset
164Date: December 2009
165Contact: Oliver Neukum <oliver@neukum.org>
166Description:
167 Writing 1 to this file tells the kernel that this
168 device will morph into another mode when it is reset.
169 Drivers will not use reset for error handling for
170 such devices.
171Users:
172 usb_modeswitch