static void __init sh_pfc_check_info()

in renesas/core.c [930:1064]

• 107 lines of code
• 40 McCabe index (conditional complexity)

static void __init sh_pfc_check_info(const struct sh_pfc_soc_info *info)
{
	const struct pinmux_bias_reg *bias_regs = info->bias_regs;
	const char *drvname = info->name;
	unsigned int *refcnts;
	unsigned int i, j, k;

	pr_info("sh_pfc: Checking %s\n", drvname);
	sh_pfc_num_regs = 0;
	sh_pfc_num_enums = 0;

	/* Check pins */
	for (i = 0; i < info->nr_pins; i++) {
		const struct sh_pfc_pin *pin = &info->pins[i];

		if (!pin->name) {
			sh_pfc_err("empty pin %u\n", i);
			continue;
		}
		for (j = 0; j < i; j++) {
			const struct sh_pfc_pin *pin2 = &info->pins[j];

			if (same_name(pin->name, pin2->name))
				sh_pfc_err("pin %s: name conflict\n",
					   pin->name);

			if (pin->pin != (u16)-1 && pin->pin == pin2->pin)
				sh_pfc_err("pin %s/%s: pin %u conflict\n",
					   pin->name, pin2->name, pin->pin);

			if (pin->enum_id && pin->enum_id == pin2->enum_id)
				sh_pfc_err("pin %s/%s: enum_id %u conflict\n",
					   pin->name, pin2->name,
					   pin->enum_id);
		}
	}

	/* Check groups and functions */
	refcnts = kcalloc(info->nr_groups, sizeof(*refcnts), GFP_KERNEL);
	if (!refcnts)
		return;

	for (i = 0; i < info->nr_functions; i++) {
		const struct sh_pfc_function *func = &info->functions[i];

		if (!func->name) {
			sh_pfc_err("empty function %u\n", i);
			continue;
		}
		for (j = 0; j < i; j++) {
			if (same_name(func->name, info->functions[j].name))
				sh_pfc_err("function %s: name conflict\n",
					   func->name);
		}
		for (j = 0; j < func->nr_groups; j++) {
			for (k = 0; k < info->nr_groups; k++) {
				if (same_name(func->groups[j],
					      info->groups[k].name)) {
					refcnts[k]++;
					break;
				}
			}

			if (k == info->nr_groups)
				sh_pfc_err("function %s: group %s not found\n",
					   func->name, func->groups[j]);
		}
	}

	for (i = 0; i < info->nr_groups; i++) {
		const struct sh_pfc_pin_group *group = &info->groups[i];

		if (!group->name) {
			sh_pfc_err("empty group %u\n", i);
			continue;
		}
		for (j = 0; j < i; j++) {
			if (same_name(group->name, info->groups[j].name))
				sh_pfc_err("group %s: name conflict\n",
					   group->name);
		}
		if (!refcnts[i])
			sh_pfc_err("orphan group %s\n", group->name);
		else if (refcnts[i] > 1)
			sh_pfc_warn("group %s referenced by %u functions\n",
				    group->name, refcnts[i]);
	}

	kfree(refcnts);

	/* Check config register descriptions */
	for (i = 0; info->cfg_regs && info->cfg_regs[i].reg; i++)
		sh_pfc_check_cfg_reg(drvname, &info->cfg_regs[i]);

	/* Check drive strength registers */
	for (i = 0; info->drive_regs && info->drive_regs[i].reg; i++)
		sh_pfc_check_drive_reg(info, &info->drive_regs[i]);

	/* Check bias registers */
	for (i = 0; bias_regs && (bias_regs[i].puen || bias_regs[i].pud); i++)
		sh_pfc_check_bias_reg(info, &bias_regs[i]);

	/* Check ioctrl registers */
	for (i = 0; info->ioctrl_regs && info->ioctrl_regs[i].reg; i++)
		sh_pfc_check_reg(drvname, info->ioctrl_regs[i].reg, U32_MAX);

	/* Check data registers */
	for (i = 0; info->data_regs && info->data_regs[i].reg; i++) {
		sh_pfc_check_reg(drvname, info->data_regs[i].reg,
				 GENMASK(info->data_regs[i].reg_width - 1, 0));
		sh_pfc_check_reg_enums(drvname, info->data_regs[i].reg,
				       info->data_regs[i].enum_ids,
				       info->data_regs[i].reg_width);
	}

#ifdef CONFIG_PINCTRL_SH_FUNC_GPIO
	/* Check function GPIOs */
	for (i = 0; i < info->nr_func_gpios; i++) {
		const struct pinmux_func *func = &info->func_gpios[i];

		if (!func->name) {
			sh_pfc_err("empty function gpio %u\n", i);
			continue;
		}
		for (j = 0; j < i; j++) {
			if (same_name(func->name, info->func_gpios[j].name))
				sh_pfc_err("func_gpio %s: name conflict\n",
					   func->name);
		}
		if (sh_pfc_check_enum(drvname, func->enum_id))
			sh_pfc_err("%s enum_id %u conflict\n", func->name,
				   func->enum_id);
	}
#endif
}