static unsigned int intc_dist_data()

in intc/balancing.c [40:81]

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

static unsigned int intc_dist_data(struct intc_desc *desc,
				   struct intc_desc_int *d,
				   intc_enum enum_id)
{
	struct intc_mask_reg *mr = desc->hw.mask_regs;
	unsigned int i, j, fn, mode;
	unsigned long reg_e, reg_d;

	for (i = 0; mr && enum_id && i < desc->hw.nr_mask_regs; i++) {
		mr = desc->hw.mask_regs + i;

		/*
		 * Skip this entry if there's no auto-distribution
		 * register associated with it.
		 */
		if (!mr->dist_reg)
			continue;

		for (j = 0; j < ARRAY_SIZE(mr->enum_ids); j++) {
			if (mr->enum_ids[j] != enum_id)
				continue;

			fn = REG_FN_MODIFY_BASE;
			mode = MODE_ENABLE_REG;
			reg_e = mr->dist_reg;
			reg_d = mr->dist_reg;

			fn += (mr->reg_width >> 3) - 1;
			return _INTC_MK(fn, mode,
					intc_get_reg(d, reg_e),
					intc_get_reg(d, reg_d),
					1,
					(mr->reg_width - 1) - j);
		}
	}

	/*
	 * It's possible we've gotten here with no distribution options
	 * available for the IRQ in question, so we just skip over those.
	 */
	return 0;
}