[V4 PATCH 18/26] usb: phy: mv_usb2_phy: add externel chip support

[Russell King - ARM Linux]

On Mon, Jan 21, 2013 at 05:07:36AM -0500, Chao Xie wrote:
> +	mv_phy->extern_chip.head = devm_kzalloc(&pdev->dev,
> +					sizeof(*mv_phy->extern_chip.head),
> +					GFP_KERNEL);
> +	if (mv_phy->extern_chip.head == NULL)
> +		return -ENOMEM;
> +	ATOMIC_INIT_NOTIFIER_HEAD(mv_phy->extern_chip.head);

Why do you need to allocate an atomic notifier list head as an entirely
separate data structure?