On Mon, Apr 26, 2010 at 03:02:31PM +0200, ext Gadiyar, Anand wrote:
I'm fairly certain current mainline no longer supports this.
Not so sure about .32 since it was a while ago that I first noticed it,
and I'm not sure of the exact version.
looking at the code and you're right, current mainline doesn't allow us
to echo "suspend" > power/level
the commit that changed that was:
commit 8e4ceb38eb5bbaef22fc00abe9bc11e26bea2ab5
Author: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Date: Mon Dec 7 13:01:37 2009 -0500
USB: prepare for changover to Runtime PM framework
This patch (as1303) revises the USB Power Management infrastructure to
make it compatible with the new driver-model Runtime PM framework:
Drivers are no longer allowed to access intf->pm_usage_cnt
directly; the PM framework manages its own usage counters.
usb_autopm_set_interface() is eliminated, because it directly
sets intf->pm_usage_cnt.
usb_autopm_enable() and usb_autopm_disable() are eliminated,
because they call usb_autopm_set_interface().
usb_autopm_get_interface_no_resume() and
usb_autopm_put_interface_no_suspend() are added. They
correspond to pm_runtime_get_noresume() and
pm_runtime_put_noidle() in the PM framework.
The power/level attribute no longer accepts "suspend", only
"on" and "auto". The PM framework doesn't allow devices to be
forced into a suspended mode.
The hub driver contains the only code that violates the new
guidelines. It is updated to use the new interface routines instead.
Signed-off-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
too bad we can't have the suspend anymore.
--
balbi
DefectiveByDesign.org
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