| Message ID | 1488885839-18470-1-git-send-email-yamada.masahiro@socionext.com |
|---|---|
| State | New |
| Headers | show |
On Tue, 7 Mar 2017 20:23:59 +0900 Masahiro Yamada <yamada.masahiro@socionext.com> wrote: > If the higher level accessor chip->write_page() is implemented, > ecc->write_page() and ecc->write_page_raw() are not required. I'm about to remove the chip->write_page() hook [1], I hope you're not planning to use it. [1]https://patchwork.ozlabs.org/patch/729966/ > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> > --- > > drivers/mtd/nand/nand_base.c | 14 ++++++++------ > 1 file changed, 8 insertions(+), 6 deletions(-) > > diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c > index a3c0f47..c32e700 100644 > --- a/drivers/mtd/nand/nand_base.c > +++ b/drivers/mtd/nand/nand_base.c > @@ -4585,11 +4585,12 @@ static bool invalid_ecc_page_accessors(struct nand_chip *chip) > * default helpers are not suitable when the core does not > * send the READ0/PAGEPROG commands. > */ > - return (!ecc->read_page || !ecc->write_page || > - !ecc->read_page_raw || !ecc->write_page_raw || > + return !ecc->read_page || !ecc->read_page_raw || > (NAND_HAS_SUBPAGE_READ(chip) && !ecc->read_subpage) || > - (NAND_HAS_SUBPAGE_WRITE(chip) && !ecc->write_subpage && > - ecc->hwctl && ecc->calculate)); > + (!chip->write_page && > + (!ecc->write_page || !ecc->write_page_raw || > + (NAND_HAS_SUBPAGE_WRITE(chip) && !ecc->write_subpage && > + ecc->hwctl && ecc->calculate))); > } > > /** > @@ -4699,8 +4700,9 @@ int nand_scan_tail(struct mtd_info *mtd) > if ((!ecc->calculate || !ecc->correct || !ecc->hwctl) && > (!ecc->read_page || > ecc->read_page == nand_read_page_hwecc || > - !ecc->write_page || > - ecc->write_page == nand_write_page_hwecc)) { > + (!chip->write_page && > + (!ecc->write_page || > + ecc->write_page == nand_write_page_hwecc)))) { > WARN(1, "No ECC functions supplied; hardware ECC not possible\n"); > ret = -EINVAL; > goto err_free; ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
Hi Boris, 2017-03-07 20:40 GMT+09:00 Boris Brezillon <boris.brezillon@free-electrons.com>: > On Tue, 7 Mar 2017 20:23:59 +0900 > Masahiro Yamada <yamada.masahiro@socionext.com> wrote: > >> If the higher level accessor chip->write_page() is implemented, >> ecc->write_page() and ecc->write_page_raw() are not required. > > I'm about to remove the chip->write_page() hook [1], I hope you're not > planning to use it. > > [1]https://patchwork.ozlabs.org/patch/729966/ > In fact, I was wondering if I should use chip->write_page() for denali.c (then I noticed this broken accessor checks). After all, I decided to not (ab)use chip->write_page(), though. Anyway, it is good that I am sure about this now. Thanks! -- Best Regards Masahiro Yamada ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index a3c0f47..c32e700 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -4585,11 +4585,12 @@ static bool invalid_ecc_page_accessors(struct nand_chip *chip) * default helpers are not suitable when the core does not * send the READ0/PAGEPROG commands. */ - return (!ecc->read_page || !ecc->write_page || - !ecc->read_page_raw || !ecc->write_page_raw || + return !ecc->read_page || !ecc->read_page_raw || (NAND_HAS_SUBPAGE_READ(chip) && !ecc->read_subpage) || - (NAND_HAS_SUBPAGE_WRITE(chip) && !ecc->write_subpage && - ecc->hwctl && ecc->calculate)); + (!chip->write_page && + (!ecc->write_page || !ecc->write_page_raw || + (NAND_HAS_SUBPAGE_WRITE(chip) && !ecc->write_subpage && + ecc->hwctl && ecc->calculate))); } /** @@ -4699,8 +4700,9 @@ int nand_scan_tail(struct mtd_info *mtd) if ((!ecc->calculate || !ecc->correct || !ecc->hwctl) && (!ecc->read_page || ecc->read_page == nand_read_page_hwecc || - !ecc->write_page || - ecc->write_page == nand_write_page_hwecc)) { + (!chip->write_page && + (!ecc->write_page || + ecc->write_page == nand_write_page_hwecc)))) { WARN(1, "No ECC functions supplied; hardware ECC not possible\n"); ret = -EINVAL; goto err_free;
If the higher level accessor chip->write_page() is implemented, ecc->write_page() and ecc->write_page_raw() are not required. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> --- drivers/mtd/nand/nand_base.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) -- 2.7.4 ______________________________________________________ Linux MTD discussion mailing list http://lists.infradead.org/mailman/listinfo/linux-mtd/