69 	uint8_t idx, reg1, reg2, reg3, tmp1, tmp2;  in nand_calculate_ecc()  local
73 	reg1 = reg2 = reg3 = 0;  in nand_calculate_ecc()
83 			reg3 ^= (uint8_t) i;  in nand_calculate_ecc()
89 	tmp1  = (reg3 & 0x80) >> 0; /* B7 -> B7 */  in nand_calculate_ecc()
91 	tmp1 |= (reg3 & 0x40) >> 1; /* B6 -> B5 */  in nand_calculate_ecc()
93 	tmp1 |= (reg3 & 0x20) >> 2; /* B5 -> B3 */  in nand_calculate_ecc()
95 	tmp1 |= (reg3 & 0x10) >> 3; /* B4 -> B1 */  in nand_calculate_ecc()
98 	tmp2  = (reg3 & 0x08) << 4; /* B3 -> B7 */  in nand_calculate_ecc()
100 	tmp2 |= (reg3 & 0x04) << 3; /* B2 -> B5 */  in nand_calculate_ecc()
102 	tmp2 |= (reg3 & 0x02) << 2; /* B1 -> B3 */  in nand_calculate_ecc()
104 	tmp2 |= (reg3 & 0x01) << 1; /* B0 -> B1 */  in nand_calculate_ecc()