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USB: make autosuspend delay a module parameter

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This patch (as859) makes the default USB autosuspend delay a module
parameter of usbcore.  By setting the delay value at boot time, users
will be able to prevent the system from autosuspending devices which
for some reason can't handle it.

The patch also stores the autosuspend delay as a per-device value.  A
later patch will allow the user to change the value, tailoring the
delay for each individual device.  A delay value of 0 will prevent
autosuspend.

Signed-off-by: Alan Stern <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Alan Stern 2007-02-20 15:00:53 -05:00 • committed by Greg Kroah-Hartman
commit b5e795f8df
6 changed files with 36 additions and 10 deletions
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7
Documentation/kernel-parameters.txt
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@ -1758,6 +1758,13 @@ and is between 256 and 4096 characters. It is defined in the file
Note that genuine overcurrent events won't be
reported either.
usbcore.autosuspend=
[USB] The autosuspend time delay (in seconds) used
for newly-detected USB devices (default 2). This
is the time required before an idle device will be
autosuspended. Devices for which the delay is set
to 0 won't be autosuspended at all.
usbhid.mousepoll=
[USBHID] The interval which mice are to be polled at.