2017-09-18 12:00 GMT+02:00 Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx>: > Hi Romain, > > On Fri, 15 Sep 2017 16:04:07 +0200 > Romain Izard <romain.izard.pro@xxxxxxxxx> wrote: > >> It is not normal for the PMECC to fail when trying to fix ECC errors. >> Report these cases as errors. > > I'm not sure we want to have ECC error messages at this level. ECC > errors are rather unusual but not impossible, and sometimes it's even > not a real error (I'm thinking of bitflips in erased pages for > example, which are not necessarily detected/fixed in hardware). > > If we decide to print error messages when unfixable bitflips are > detected, it should be done in the nand-controller driver (somewhere > along those lines [1]). > > Regards, > > Boris > > [1]http://elixir.free-electrons.com/linux/latest/source/drivers/mtd/nand/atmel/nand-controller.c#L827 > >> >> Signed-off-by: Romain Izard <romain.izard.pro@xxxxxxxxx> >> --- >> drivers/mtd/nand/atmel/pmecc.c | 4 +++- >> 1 file changed, 3 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/mtd/nand/atmel/pmecc.c b/drivers/mtd/nand/atmel/pmecc.c >> index 8d1208f38025..2a23f1ff945f 100644 >> --- a/drivers/mtd/nand/atmel/pmecc.c >> +++ b/drivers/mtd/nand/atmel/pmecc.c >> @@ -687,6 +687,8 @@ static int atmel_pmecc_err_location(struct atmel_pmecc_user *user) >> * Number of roots does not match the degree of smu >> * unable to correct error. >> */ >> + dev_err(pmecc->dev, >> + "PMECC: Impossible to calculate error location.\n"); >> return -EBADMSG; >> } >> >> @@ -729,7 +731,7 @@ int atmel_pmecc_correct_sector(struct atmel_pmecc_user *user, int sector, >> ptr = ecc + byte - sectorsize; >> area = "ECC"; >> } else { >> - dev_dbg(pmecc->dev, >> + dev_err(pmecc->dev, >> "Invalid errpos value (%d, max is %d)\n", >> errpos, (sectorsize + eccbytes) * 8); >> return -EINVAL; > Ok, I will drop this patch. -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
