Since commit 323de9efdf3e ("pinctrl: make pinctrl_register() return proper error code"), pinctrl_register returns an error code rather than NULL on failure. Most drivers were updated at that time. Update some drivers that were introduced more recently. -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html