pr_info("PMIC revision 2: %02X\n", val);
rev |= val << BITS_PER_BYTE;
- chip = devm_kzalloc(&pdev->dev, sizeof(*chip) +
- sizeof(chip->config[0]) * data->num_irqs,
+ chip = devm_kzalloc(&pdev->dev,
+ struct_size(chip, config, data->num_irqs),
GFP_KERNEL);
if (!chip)
return -ENOMEM;