static long clk_rate_round_helper()

in clk/core.c [91:123]

• 27 lines of code
• 7 McCabe index (conditional complexity)

static long clk_rate_round_helper(struct clk_rate_round_data *rounder)
{
	unsigned long rate_error, rate_error_prev = ~0UL;
	unsigned long highest, lowest, freq;
	long rate_best_fit = -ENOENT;
	int i;

	highest = 0;
	lowest = ~0UL;

	for_each_frequency(i, rounder, freq) {
		if (freq > highest)
			highest = freq;
		if (freq < lowest)
			lowest = freq;

		rate_error = abs(freq - rounder->rate);
		if (rate_error < rate_error_prev) {
			rate_best_fit = freq;
			rate_error_prev = rate_error;
		}

		if (rate_error == 0)
			break;
	}

	if (rounder->rate >= highest)
		rate_best_fit = highest;
	if (rounder->rate <= lowest)
		rate_best_fit = lowest;

	return rate_best_fit;
}