275 	int ret = 0;  in mentor_i2c_probe()  local
277 	ret = mentor_i2c_start_bit_set();  in mentor_i2c_probe()
278 	if (ret != 0) {  in mentor_i2c_probe()
285 	ret = mentor_i2c_address_set(chip, I2C_CMD_WRITE);  in mentor_i2c_probe()
286 	if (ret != 0) {  in mentor_i2c_probe()
297 	return ret;  in mentor_i2c_probe()
409 static int mentor_i2c_unstuck(int ret)  in mentor_i2c_unstuck()  argument
413 	if (ret != -ETIMEDOUT)  in mentor_i2c_unstuck()
414 		return ret;  in mentor_i2c_unstuck()
424 		ret = -EPERM;  in mentor_i2c_unstuck()
428 		ret = -EAGAIN;  in mentor_i2c_unstuck()
430 	return ret;  in mentor_i2c_unstuck()
433 static int mentor_i2c_unstuck(int ret)  in mentor_i2c_unstuck()  argument
489 	int ret = 0;  in i2c_read()  local
497 		if (ret != -EAGAIN && ret) {  in i2c_read()
501 			return ret;  in i2c_read()
509 		ret = mentor_i2c_start_bit_set();  in i2c_read()
510 		if (ret) {  in i2c_read()
511 			ret = mentor_i2c_unstuck(ret);  in i2c_read()
517 			ret = mentor_i2c_address_set(chip, I2C_CMD_WRITE);  in i2c_read()
518 			if (ret)  in i2c_read()
521 			ret = mentor_i2c_target_offset_set(chip, addr, alen);  in i2c_read()
522 			if (ret)  in i2c_read()
524 			ret = mentor_i2c_start_bit_set();  in i2c_read()
525 			if (ret)  in i2c_read()
529 		ret =  mentor_i2c_address_set(chip, I2C_CMD_READ);  in i2c_read()
530 		if (ret)  in i2c_read()
533 		ret = mentor_i2c_data_receive(buffer, len);  in i2c_read()
534 		if (ret)  in i2c_read()
537 		ret =  mentor_i2c_stop_bit_set();  in i2c_read()
538 	} while ((ret == -EAGAIN) && (counter < I2C_MAX_RETRY_CNT));  in i2c_read()
543 		ret = -EPERM;  in i2c_read()
550 	return ret;  in i2c_read()
568 	int ret = 0;  in i2c_write()  local
572 		if (ret != -EAGAIN && ret) {  in i2c_write()
575 			return ret;  in i2c_write()
582 		ret = mentor_i2c_start_bit_set();  in i2c_write()
583 		if (ret) {  in i2c_write()
584 			ret = mentor_i2c_unstuck(ret);  in i2c_write()
588 		ret = mentor_i2c_address_set(chip, I2C_CMD_WRITE);  in i2c_write()
589 		if (ret)  in i2c_write()
594 			ret = mentor_i2c_target_offset_set(chip, addr, alen);  in i2c_write()
595 			if (ret)  in i2c_write()
599 		ret = mentor_i2c_data_transmit(buffer, len);  in i2c_write()
600 		if (ret)  in i2c_write()
603 		ret = mentor_i2c_stop_bit_set();  in i2c_write()
604 	} while ((ret == -EAGAIN) && (counter < I2C_MAX_RETRY_CNT));  in i2c_write()
609 		ret = -EPERM;  in i2c_write()
613 	return ret;  in i2c_write()