On Wed, Apr 24, 2013 at 02:23:15AM -0400, Chao Xie wrote:
> diff --git a/include/linux/usb/phy.h b/include/linux/usb/phy.h
> index 6b5978f..98d7e60 100644
> --- a/include/linux/usb/phy.h
> +++ b/include/linux/usb/phy.h
> @@ -87,6 +87,14 @@ struct usb_phy {
> /* to support controllers that have multiple transceivers */
> struct list_head head;
>
> + /*
> + * PHY may be shared by multiple devices.
> + * mutex and refcount are used to make sure PHY only initialize or
> + * shutdown once.
bad grammar in this sentence.
> + */
> + struct mutex phy_mutex;
> + unsigned int refcount;
why don't you use an atomic_t ?
--
balbi
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