Hi Daniel, Daniel Palmer <dan...@0x0f.com> wrote on Wed, 7 Apr 2021 21:01:01 +0900:
> Hi Miquel, > > On Wed, 7 Apr 2021 at 17:02, Miquel Raynal <miquel.ray...@bootlin.com> wrote: > > You may look at micron_8_ecc_get_status() helper to guide you. But > > IMHO, if there are 0-3 bf, you should probably assume there were 3 bf > > and return 3, if there were 4, return 4, if it's uncorrectable return > > -EBADMSG otherwise -EINVAL. > > Understood. > > > We should verify that this does not mess with UBI wear leveling > > though. Please check that returning 3-bit errors no matter the > > actual number of flipped bits does not lead UBI to move the data away > > (I think it's fine but we need to be sure otherwise the implementation > > proposal is not valid). > > Ok. I'm not sure how to check that yet but I'll look into it. > You can probably check the threshold in sysfs (/sys/class/mtd/mtdX/*threshold*). Thanks, Miquèl
