Hi, On Mon, Aug 06 2012, Dirk Behme wrote: > On embedded devices, often there is a combination of removable mmc > devices (e.g. MMC/SD cards) and hard wired ones (e.g. eMMC). > Depending on the hardware configuration, the 'mmcblkN' node might > change if the removable device is available or not at boot time. > > E.g. if the removable device is attached at boot time, it might > become mmxblk0. And the hard wired one mmcblk1. But if the removable > device isn't there at boot time, the hard wired one will become > mmcblk0. This makes it somehow difficult to hard code the root device > to the non-removable device and boot fast. > > This change does simply associate 'N' of 'mmcblkN' with the slot index > instead of the dynamic name index. The slot index is always the same, > ensuring that the non-removable mmc device is associated always > with the same mmcblkN. Independent of the availability of the removable > one. I like this change in principle, but doesn't it break boot for everyone currently using e.g. root=/dev/mmcblk0p1 on slot index 2? That doesn't sound like an acceptable regression. Thanks, - Chris. -- Chris Ball <cjb@xxxxxxxxxx> <http://printf.net/> One Laptop Per Child -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
