Lee, I have a follow up question regarding interrupt. I see many I2C bus drivers request interrupt with flag = 0. Why not using IRQF_SHARED? I understand the performance concern. If there is any other reason, I want to know about it before I go too far on my driver. York -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html