return 0;
 }
 
-static struct ad7091r_init_info ad7091r2_init_info = {
+static const struct ad7091r_init_info ad7091r2_init_info = {
        .info_no_irq = &ad7091r8_infos[AD7091R2_INFO],
        .regmap_config = &ad7091r2_reg_conf,
        .init_adc_regmap = &ad7091r8_regmap_init,
        .setup = &ad7091r8_gpio_setup
 };
 
-static struct ad7091r_init_info ad7091r4_init_info = {
+static const struct ad7091r_init_info ad7091r4_init_info = {
        .info_no_irq = &ad7091r8_infos[AD7091R4_INFO],
        .info_irq = &ad7091r8_infos[AD7091R4_INFO_IRQ],
        .regmap_config = &ad7091r4_reg_conf,
        .setup = &ad7091r8_gpio_setup
 };
 
-static struct ad7091r_init_info ad7091r8_init_info = {
+static const struct ad7091r_init_info ad7091r8_init_info = {
        .info_no_irq = &ad7091r8_infos[AD7091R8_INFO],
        .info_irq = &ad7091r8_infos[AD7091R8_INFO_IRQ],
        .regmap_config = &ad7091r8_reg_conf,