On Wed, Aug 04, 2010 at 10:52:55PM +0100, Alan Cox wrote:
> From: JiebingLi <jiebing.li@xxxxxxxxx>
>
> Get Maximum power consumption function in USB clent driver. This is used by
> the power manager.
>
> Signed-off-by: JiebingLi <jiebing.li@xxxxxxxxx>
> Signed-off-by: Alan Cox <alan@xxxxxxxxxxxxxxx>
> ---
>
> drivers/usb/gadget/langwell_udc.c | 49 +++++++++++++++++++++++++++++++++++++
> include/linux/usb/langwell_udc.h | 6 +++++
> 2 files changed, 55 insertions(+), 0 deletions(-)
>
>
> diff --git a/drivers/usb/gadget/langwell_udc.c b/drivers/usb/gadget/langwell_udc.c
> index 3b3e5ba..6251c3c 100644
> --- a/drivers/usb/gadget/langwell_udc.c
> +++ b/drivers/usb/gadget/langwell_udc.c
> @@ -1974,6 +1974,55 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
> EXPORT_SYMBOL(usb_gadget_unregister_driver);
>
>
> +/* gets the maximum power consumption */
> +int langwell_udc_maxpower(int *mA)
> +{
> + struct langwell_udc *dev = the_controller;
> + u32 usbmode, portsc1, usbcmd;
> +
> + /* fatal error */
> + if (!dev) {
> + *mA = 0;
> + return -EINVAL;
> + }
How could this ever happen?
thanks,
greg k-h
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