diff options
author | Alan Stern <stern@rowland.harvard.edu> | 2007-03-13 16:39:15 -0400 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-04-27 16:28:35 -0400 |
commit | eaafbc3a8adab16babe2c20e54ad3ba40d1fbbc9 (patch) | |
tree | fea84341faf742efe8beeaff03ec94b687b7b26f /Documentation/ABI/testing | |
parent | 6b157c9bf3bace6eeb4a973da63923ef24995cce (diff) |
USB: Allow autosuspend delay to equal 0
This patch (as867) adds an entry for the new power/autosuspend
attribute in Documentation/ABI/testing, and it changes the behavior of
the delay value. Now a delay of 0 means to autosuspend as soon as
possible, and negative values will prevent autosuspend.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/ABI/testing')
-rw-r--r-- | Documentation/ABI/testing/sysfs-bus-usb | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-usb b/Documentation/ABI/testing/sysfs-bus-usb new file mode 100644 index 000000000000..00a84326325f --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-usb | |||
@@ -0,0 +1,15 @@ | |||
1 | What: /sys/bus/usb/devices/.../power/autosuspend | ||
2 | Date: March 2007 | ||
3 | KernelVersion: 2.6.21 | ||
4 | Contact: Alan Stern <stern@rowland.harvard.edu> | ||
5 | Description: | ||
6 | Each USB device directory will contain a file named | ||
7 | power/autosuspend. This file holds the time (in seconds) | ||
8 | the device must be idle before it will be autosuspended. | ||
9 | 0 means the device will be autosuspended as soon as | ||
10 | possible. Negative values will prevent the device from | ||
11 | being autosuspended at all, and writing a negative value | ||
12 | will resume the device if it is already suspended. | ||
13 | |||
14 | The autosuspend delay for newly-created devices is set to | ||
15 | the value of the usbcore.autosuspend module parameter. | ||