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| author | Boris Brezillon <boris.brezillon@bootlin.com> | 2018-09-07 00:38:39 +0200 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2018-10-03 11:12:25 +0200 |
| commit | f9ebd1bb41031afc162e9acda7ad044a35bccf82 (patch) | |
| tree | 2c37979d6b398a182a6cb4e794e1b3429dbd4d89 | |
| parent | cdc784c743945f445a26f4c0bd60a50a1adb39c4 (diff) | |
| download | talos-obmc-linux-f9ebd1bb41031afc162e9acda7ad044a35bccf82.tar.gz talos-obmc-linux-f9ebd1bb41031afc162e9acda7ad044a35bccf82.zip | |
mtd: rawnand: Deprecate ->erase()
The ->erase() hook have been overloaded by some drivers for bad reasons:
either the driver was not fitting in the NAND framework and should have
been an MTD driver (docg4), or the driver uses a specific path for the
ERASE operation (denali), instead of implementing it generically.
In any case, we should discourage people from overloading this method
and encourage them to implement ->exec_op() instead.
Move the ->erase() hook to the nand_legacy struct to make it clear.
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
| -rw-r--r-- | drivers/mtd/nand/raw/denali.c | 2 | ||||
| -rw-r--r-- | drivers/mtd/nand/raw/nand_base.c | 7 | ||||
| -rw-r--r-- | include/linux/mtd/rawnand.h | 4 |
3 files changed, 8 insertions, 5 deletions
diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c index c14493ef6126..858358027dc9 100644 --- a/drivers/mtd/nand/raw/denali.c +++ b/drivers/mtd/nand/raw/denali.c @@ -1275,7 +1275,7 @@ static int denali_attach_chip(struct nand_chip *chip) chip->ecc.write_page_raw = denali_write_page_raw; chip->ecc.read_oob = denali_read_oob; chip->ecc.write_oob = denali_write_oob; - chip->erase = denali_erase; + chip->legacy.erase = denali_erase; ret = denali_multidev_fixup(denali); if (ret) diff --git a/drivers/mtd/nand/raw/nand_base.c b/drivers/mtd/nand/raw/nand_base.c index d71a3d303903..57c89e275a3a 100644 --- a/drivers/mtd/nand/raw/nand_base.c +++ b/drivers/mtd/nand/raw/nand_base.c @@ -4730,7 +4730,11 @@ int nand_erase_nand(struct nand_chip *chip, struct erase_info *instr, (page + pages_per_block)) chip->pagebuf = -1; - status = chip->erase(chip, page & chip->pagemask); + 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) { @@ -5756,7 +5760,6 @@ ident_done: chip->options |= NAND_ROW_ADDR_3; chip->badblockbits = 8; - chip->erase = single_erase; /* Do not replace user supplied command function! */ if (mtd->writesize > 512 && chip->legacy.cmdfunc == nand_command) diff --git a/include/linux/mtd/rawnand.h b/include/linux/mtd/rawnand.h index aa3e931d0206..97c6ff7d127e 100644 --- a/include/linux/mtd/rawnand.h +++ b/include/linux/mtd/rawnand.h @@ -1189,6 +1189,7 @@ int nand_op_parser_exec_op(struct nand_chip *chip, * @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 * * If you look at this structure you're already wrong. These fields/hooks are * all deprecated. @@ -1207,6 +1208,7 @@ 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); }; /** @@ -1228,7 +1230,6 @@ struct nand_legacy { * @buf_align: minimum buffer alignment required by a platform * @dummy_controller: dummy controller implementation for drivers that can * only control a single chip - * @erase: [REPLACEABLE] erase function * @chip_delay: [BOARDSPECIFIC] chip dependent delay for transferring * data from array to read regs (tR). * @state: [INTERN] the current state of the NAND device @@ -1308,7 +1309,6 @@ struct nand_chip { int (*exec_op)(struct nand_chip *chip, const struct nand_operation *op, bool check_only); - int (*erase)(struct nand_chip *chip, int page); int (*set_features)(struct nand_chip *chip, int feature_addr, uint8_t *subfeature_para); int (*get_features)(struct nand_chip *chip, int feature_addr, |
