Hi. Chris. I found some problem in mmc driver. As you know, in nand trend, emmc nand is used booting device in embededd product. It means that kernel, rootfs image is stored in emmc nand device. and when rescaning mmc, mmc driver is working by delay work queue. It can be cause "can not mount rootfs". If kernel mounting is faster than mmc rescan, this problem would occur.. I changed to schedule_work instead of mmc_schedule_delayed_work. I can make patch & test. could you tell me your opinion ? Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html