static int __init sh_clk_init_parent()

in clk/cpg.c [194:224]

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

static int __init sh_clk_init_parent(struct clk *clk)
{
	u32 val;

	if (clk->parent)
		return 0;

	if (!clk->parent_table || !clk->parent_num)
		return 0;

	if (!clk->src_width) {
		pr_err("sh_clk_init_parent: cannot select parent clock\n");
		return -EINVAL;
	}

	val  = (sh_clk_read(clk) >> clk->src_shift);
	val &= (1 << clk->src_width) - 1;

	if (val >= clk->parent_num) {
		pr_err("sh_clk_init_parent: parent table size failed\n");
		return -EINVAL;
	}

	clk_reparent(clk, clk->parent_table[val]);
	if (!clk->parent) {
		pr_err("sh_clk_init_parent: unable to set parent");
		return -EINVAL;
	}

	return 0;
}