On Wed, Sep 22, 2010 at 1:22 PM, Krogerus Heikki (EXT-Teleca/Helsinki)
<ext-heikki.krogerus@xxxxxxxxx> wrote:
> From: Heikki Krogerus <ext-heikki.krogerus@xxxxxxxxx>
>
> Inform charging HW/SW how much it's allowed to draw.
>
> Signed-off-by: Heikki Krogerus <ext-heikki.krogerus@xxxxxxxxx>
> ---
> drivers/usb/musb/musb_gadget.c | 7 +++++++
> 1 files changed, 7 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
> index 6fca870..40d3c13 100644
> --- a/drivers/usb/musb/musb_gadget.c
> +++ b/drivers/usb/musb/musb_gadget.c
> @@ -1519,8 +1519,15 @@ static int musb_gadget_vbus_session(struct usb_gadget *gadget, int is_active)
>
> static int musb_gadget_vbus_draw(struct usb_gadget *gadget, unsigned mA)
> {
> + static unsigned old_ma;
> struct musb *musb = gadget_to_musb(gadget);
>
> + if (mA != 0 && old_ma != mA)
> + blocking_notifier_call_chain(&musb->xceiv->notifier,
> + USB_EVENT_ENUMERATED, &mA);
> +
You will need an atomic notifier since this gets called from Interrupt context.
Regards,
Maulik
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
