Re: How to detect of Windows Pc's removal action?

On Wed, 7 Mar 2007, Pandita, Vikram wrote:

> I have a related query on USB suspend: 
> In Host mode, is there a way to force a SUSPEND/RESUME from the class driver or application?

You can force a suspend from within the kernel.  Suppose that udev is a 
struct usb_device you want to suspend.  Then you can call:

	(udev->dev.bus->suspend)(&udev->dev);

You can force a suspend from an application if your kernel has 
CONFIG_PM_SYSFS_DEPRECATED turned on.  From the shell you can do:

	echo -n 2 >/sys/bus/usb/devices/.../power/state

where "..." is the name of the device to suspend.  A similar approach will 
work from within a program.

Alan Stern


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