From: Masahiro Yamada <yamada.masahiro@socionext.com>
To: linux-mtd@lists.infradead.org,
Boris Brezillon <boris.brezillon@bootlin.com>,
Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>,
Brian Norris <computersforpeace@gmail.com>,
linux-kernel@vger.kernel.org, Marek Vasut <marek.vasut@gmail.com>,
Richard Weinberger <richard@nod.at>,
David Woodhouse <dwmw2@infradead.org>,
Boris Brezillon <bbrezillon@kernel.org>
Subject: [PATCH v2] mtd: rawnand: remove ->legacy.erase and single_erase()
Date: Mon, 21 Jan 2019 15:32:07 +0900 [thread overview]
Message-ID: <1548052327-26483-1-git-send-email-yamada.masahiro@socionext.com> (raw)
Now that the last user of this hook, denali.c, stopped using it,
we can remove the erase hook from nand_legacy.
I squashed single_erase() because only the difference between
single_erase() and nand_erase_op() is the number of bit shifts.
The status/ret conversion in nand_erase_nand() is unneeded since
commit eb94555e9e97 ("mtd: nand: use usual return values for the
->erase() hook"). Cleaned it up now.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---
This depends on the denali patch:
http://patchwork.ozlabs.org/patch/1028264/
Changes in v2:
- I noticed the masking by chip->pagemask is still needed
drivers/mtd/nand/raw/nand_base.c | 31 ++++---------------------------
include/linux/mtd/rawnand.h | 2 --
2 files changed, 4 insertions(+), 29 deletions(-)
diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c
index cca4b24..7ea3f10 100644
--- a/drivers/mtd/nand/raw/nand_base.c
+++ b/drivers/mtd/nand/raw/nand_base.c
@@ -4155,23 +4155,6 @@ static int nand_write_oob(struct mtd_info *mtd, loff_t to,
}
/**
- * single_erase - [GENERIC] NAND standard block erase command function
- * @chip: NAND chip object
- * @page: the page address of the block which will be erased
- *
- * Standard erase command for NAND chips. Returns NAND status.
- */
-static int single_erase(struct nand_chip *chip, int page)
-{
- unsigned int eraseblock;
-
- /* Send commands to erase a block */
- eraseblock = page >> (chip->phys_erase_shift - chip->page_shift);
-
- return nand_erase_op(chip, eraseblock);
-}
-
-/**
* nand_erase - [MTD Interface] erase block(s)
* @mtd: MTD device structure
* @instr: erase instruction
@@ -4194,7 +4177,7 @@ static int nand_erase(struct mtd_info *mtd, struct erase_info *instr)
int nand_erase_nand(struct nand_chip *chip, struct erase_info *instr,
int allowbbt)
{
- int page, status, pages_per_block, ret, chipnr;
+ int page, pages_per_block, ret, chipnr;
loff_t len;
pr_debug("%s: start = 0x%012llx, len = %llu\n",
@@ -4246,17 +4229,11 @@ int nand_erase_nand(struct nand_chip *chip, struct erase_info *instr,
(page + pages_per_block))
chip->pagebuf = -1;
- if (chip->legacy.erase)
- status = chip->legacy.erase(chip,
- page & chip->pagemask);
- else
- status = single_erase(chip, page & chip->pagemask);
-
- /* See if block erase succeeded */
- if (status) {
+ ret = nand_erase_op(chip, (page & chip->pagemask) >>
+ (chip->phys_erase_shift - chip->page_shift));
+ if (ret) {
pr_debug("%s: failed erase, page 0x%08x\n",
__func__, page);
- ret = -EIO;
instr->fail_addr =
((loff_t)page << chip->page_shift);
goto erase_exit;
diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h
index 33e240a..5e37534 100644
--- a/include/linux/mtd/rawnand.h
+++ b/include/linux/mtd/rawnand.h
@@ -936,7 +936,6 @@ static inline void nand_controller_init(struct nand_controller *nfc)
* @waitfunc: hardware specific function for wait on ready.
* @block_bad: check if a block is bad, using OOB markers
* @block_markbad: mark a block bad
- * @erase: erase function
* @set_features: set the NAND chip features
* @get_features: get the NAND chip features
* @chip_delay: chip dependent delay for transferring data from array to read
@@ -962,7 +961,6 @@ struct nand_legacy {
int (*waitfunc)(struct nand_chip *chip);
int (*block_bad)(struct nand_chip *chip, loff_t ofs);
int (*block_markbad)(struct nand_chip *chip, loff_t ofs);
- int (*erase)(struct nand_chip *chip, int page);
int (*set_features)(struct nand_chip *chip, int feature_addr,
u8 *subfeature_para);
int (*get_features)(struct nand_chip *chip, int feature_addr,
--
2.7.4
next reply other threads:[~2019-01-21 7:11 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-21 6:32 Masahiro Yamada [this message]
2019-01-21 8:13 ` [PATCH v2] mtd: rawnand: remove ->legacy.erase and single_erase() Boris Brezillon
2019-01-21 23:29 ` kbuild test robot
2019-01-25 12:37 ` Miquel Raynal
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