Just realised the above is only part of the changes I'm currently running with. You also need to prevent the driver giving up when it sees revision 8. Here's a more complete diff   *** mmc.c-orig 2017-09-04 10:51:31.720262885 -0400 --- mmc.c 2017-09-11 09:43:45.262343562 -0400 *************** int mmc_decode_ext_csd(struct mmc *mmc, *** 567,577 **** --- 567,581 ---- dec_ext_csd->rev = ext_csd[EXT_CSD_REV]; + // Hack to minimize behaviour changes + if (dec_ext_csd->r