[PATCH 2/2] hw_random: add driver for atmel true hardware random number generator

[Mark Brown]

On Thu, Oct 06, 2011 at 05:41:34PM +0200, Peter Korsgaard wrote:

> +	trng->clk = clk_get(&pdev->dev, NULL);
> +	if (IS_ERR(trng->clk))
> +		return PTR_ERR(trng->clk);
> +
> +	ret = clk_enable(trng->clk);
> +	if (ret)
> +		goto err_enable;

Is it worth enabling the hardware enabled only when the device is open?