int ptp_populate_pin_groups()

in ptp_sysfs.c [418:456]

• 31 lines of code
• 5 McCabe index (conditional complexity)

int ptp_populate_pin_groups(struct ptp_clock *ptp)
{
	struct ptp_clock_info *info = ptp->info;
	int err = -ENOMEM, i, n_pins = info->n_pins;

	if (!n_pins)
		return 0;

	ptp->pin_dev_attr = kcalloc(n_pins, sizeof(*ptp->pin_dev_attr),
				    GFP_KERNEL);
	if (!ptp->pin_dev_attr)
		goto no_dev_attr;

	ptp->pin_attr = kcalloc(1 + n_pins, sizeof(*ptp->pin_attr), GFP_KERNEL);
	if (!ptp->pin_attr)
		goto no_pin_attr;

	for (i = 0; i < n_pins; i++) {
		struct device_attribute *da = &ptp->pin_dev_attr[i];
		sysfs_attr_init(&da->attr);
		da->attr.name = info->pin_config[i].name;
		da->attr.mode = 0644;
		da->show = ptp_pin_show;
		da->store = ptp_pin_store;
		ptp->pin_attr[i] = &da->attr;
	}

	ptp->pin_attr_group.name = "pins";
	ptp->pin_attr_group.attrs = ptp->pin_attr;

	ptp->pin_attr_groups[0] = &ptp->pin_attr_group;

	return 0;

no_pin_attr:
	kfree(ptp->pin_dev_attr);
no_dev_attr:
	return err;
}