Hi,     I am working on integrating TPS695190 regulator code into kernel version 4.4.16. The regulator powers MMC card slot using Designware MMC controller. I have declared the necessary code in my board.c file. The MMC card slot is powered by ldo8 supply declared as -----------------------------------------------------------------------------Code--------------------------------------------------------------------------------- static struct regulator_consumer_supply opv5xc_ldo8_supply[] = {         REGULATOR_SUPPLY("sd_vdd", NULL), }; static struct regulator_init_data opv5xc_ldo8 = {         .constraints = {                 .min_uV = 1000000,                 .max_uV = 3300000,                 .valid_ops_mask = (REGULATOR_CHANGE_VOLTAGE |                                 REGULATOR_CHANGE_STATUS),                 .boot_on = 1,         },         .num_consumer_supplies = ARRAY_SIZE(opv5xc_ldo8_supply),         .consumer_supplies = opv5xc_ldo8_supply, }; static struct tps65910_board tps65910_pdata = {               .tps65910_pmic_init_data[TPS65911_REG_LDO8]     = &opv5xc_ldo8, }; static struct i2c_board_info __initdata opv5xc_i2c1_devs[] = {         {                 I2C_BOARD_INFO ("tps65911", TPS65910_I2C_ID1),                 .platform_data = &tps65910_pdata,         }, }; ----------------------------------------------------------------------------------------------------------------------------------------------------------------------- When I call regulator_get struct regulator *sd_vdd = regulator_get(NULL, "sd_vdd");  function from the Designware MMC driver code function the kernel panics.I have attached the log file for reference. Can somebody please let me know what I am doing wrong here? Regards,Amit.