| Message ID | 1560992416-5753-1-git-send-email-liaoweixiong@allwinnertech.com |
|---|---|
| State | Changes Requested |
| Delegated to: | Miquel Raynal |
| Headers | show |
| Series | [v2] mtd: spinand: read return badly if the last page has bitflips | expand |
On Thu, 20 Jun 2019 09:00:16 +0800 liaoweixiong <liaoweixiong@allwinnertech.com> wrote: > In case of the last page containing bitflips (ret > 0), > spinand_mtd_read() will return that number of bitflips for the last > page. But to me it looks like it should instead return max_bitflips like > it does when the last page read returns with 0. > > Signed-off-by: liaoweixiong <liaoweixiong@allwinnertech.com> Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com> > --- > drivers/mtd/nand/spi/core.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c > index 556bfdb..6b9388d 100644 > --- a/drivers/mtd/nand/spi/core.c > +++ b/drivers/mtd/nand/spi/core.c > @@ -511,12 +511,12 @@ static int spinand_mtd_read(struct mtd_info *mtd, loff_t from, > if (ret == -EBADMSG) { > ecc_failed = true; > mtd->ecc_stats.failed++; > - ret = 0; > } else { > mtd->ecc_stats.corrected += ret; > max_bitflips = max_t(unsigned int, max_bitflips, ret); > } > > + ret = 0; > ops->retlen += iter.req.datalen; > ops->oobretlen += iter.req.ooblen; > }
On 20.06.19 03:00, liaoweixiong wrote: > In case of the last page containing bitflips (ret > 0), > spinand_mtd_read() will return that number of bitflips for the last > page. But to me it looks like it should instead return max_bitflips like > it does when the last page read returns with 0. > > Signed-off-by: liaoweixiong <liaoweixiong@allwinnertech.com> Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> This should probably be resent with the following tags: Cc: stable@vger.kernel.org Fixes: 7529df465248 ("mtd: nand: Add core infrastructure to support SPI NANDs") > --- > drivers/mtd/nand/spi/core.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c > index 556bfdb..6b9388d 100644 > --- a/drivers/mtd/nand/spi/core.c > +++ b/drivers/mtd/nand/spi/core.c > @@ -511,12 +511,12 @@ static int spinand_mtd_read(struct mtd_info *mtd, loff_t from, > if (ret == -EBADMSG) { > ecc_failed = true; > mtd->ecc_stats.failed++; > - ret = 0; > } else { > mtd->ecc_stats.corrected += ret; > max_bitflips = max_t(unsigned int, max_bitflips, ret); > } > > + ret = 0; > ops->retlen += iter.req.datalen; > ops->oobretlen += iter.req.ooblen; > } >
OK, thanks for your reviewing. I will resend right now. On 2019/6/24 PM3:37, Schrempf Frieder wrote: > On 20.06.19 03:00, liaoweixiong wrote: >> In case of the last page containing bitflips (ret > 0), >> spinand_mtd_read() will return that number of bitflips for the last >> page. But to me it looks like it should instead return max_bitflips like >> it does when the last page read returns with 0. >> >> Signed-off-by: liaoweixiong <liaoweixiong@allwinnertech.com> > > Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de> > > This should probably be resent with the following tags: > > Cc: stable@vger.kernel.org > Fixes: 7529df465248 ("mtd: nand: Add core infrastructure to support SPI > NANDs") > >> --- >> drivers/mtd/nand/spi/core.c | 2 +- >> 1 file changed, 1 insertion(+), 1 deletion(-) >> >> diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c >> index 556bfdb..6b9388d 100644 >> --- a/drivers/mtd/nand/spi/core.c >> +++ b/drivers/mtd/nand/spi/core.c >> @@ -511,12 +511,12 @@ static int spinand_mtd_read(struct mtd_info *mtd, loff_t from, >> if (ret == -EBADMSG) { >> ecc_failed = true; >> mtd->ecc_stats.failed++; >> - ret = 0; >> } else { >> mtd->ecc_stats.corrected += ret; >> max_bitflips = max_t(unsigned int, max_bitflips, ret); >> } >> >> + ret = 0; >> ops->retlen += iter.req.datalen; >> ops->oobretlen += iter.req.ooblen; >> }
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c index 556bfdb..6b9388d 100644 --- a/drivers/mtd/nand/spi/core.c +++ b/drivers/mtd/nand/spi/core.c @@ -511,12 +511,12 @@ static int spinand_mtd_read(struct mtd_info *mtd, loff_t from, if (ret == -EBADMSG) { ecc_failed = true; mtd->ecc_stats.failed++; - ret = 0; } else { mtd->ecc_stats.corrected += ret; max_bitflips = max_t(unsigned int, max_bitflips, ret); } + ret = 0; ops->retlen += iter.req.datalen; ops->oobretlen += iter.req.ooblen; }
In case of the last page containing bitflips (ret > 0), spinand_mtd_read() will return that number of bitflips for the last page. But to me it looks like it should instead return max_bitflips like it does when the last page read returns with 0. Signed-off-by: liaoweixiong <liaoweixiong@allwinnertech.com> --- drivers/mtd/nand/spi/core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)