clk: fix set_rate_range when current rate is out of range

int clk_set_rate_range(struct clk *clk, unsigned long min, unsigned long max)

{

	int ret = 0;

	unsigned long old_min, old_max, rate;

	if (!clk)

		return 0;

	if (clk->exclusive_count)

		clk_core_rate_unprotect(clk->core);

	if (min != clk->min_rate || max != clk->max_rate) {

	/* Save the current values in case we need to rollback the change */

	old_min = clk->min_rate;

	old_max = clk->max_rate;

	clk->min_rate = min;

	clk->max_rate = max;

		ret = clk_core_set_rate_nolock(clk->core, clk->core->req_rate);

	rate = clk_core_get_rate_nolock(clk->core);

	if (rate < min || rate > max) {

		/*

		 * FIXME:

		 * We are in bit of trouble here, current rate is outside the

		 * the requested range. We are going try to request appropriate

		 * range boundary but there is a catch. It may fail for the

		 * usual reason (clock broken, clock protected, etc) but also

		 * because:

		 * - round_rate() was not favorable and fell on the wrong

		 *   side of the boundary

		 * - the determine_rate() callback does not really check for

		 *   this corner case when determining the rate

		 */

		if (rate < min)

			rate = min;

		else

			rate = max;

		ret = clk_core_set_rate_nolock(clk->core, rate);

		if (ret) {

			/* rollback the changes */

			clk->min_rate = old_min;

			clk->max_rate = old_max;

		}

	}

	if (clk->exclusive_count)