I2C_XFER_TIMEOUT
unsigned long timeout = jiffies + I2C_XFER_TIMEOUT;
I2C_XFER_TIMEOUT);
I2C_XFER_TIMEOUT);
msecs_to_jiffies(I2C_XFER_TIMEOUT));
timeout = jiffies + msecs_to_jiffies(I2C_XFER_TIMEOUT);
timeout = jiffies + msecs_to_jiffies(I2C_XFER_TIMEOUT);