diff options
| author | Tudor Ambarus <tudor.ambarus@microchip.com> | 2021-04-03 09:09:31 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2021-04-16 20:30:54 +0200 |
| commit | 1df1fc8c62f7527d953c7f3869930067bf5b3f29 (patch) | |
| tree | b683a6e18b43e5a37f47bbbdb2cfb27d54056cde /drivers/mtd/chips | |
| parent | ef4ed780d005d65b1a70ba7803233cace93a73ac (diff) | |
mtd: core: Constify buf in mtd_write_user_prot_reg()
The write buffer comes from user and should be const.
Constify write buffer in mtd core and across all _write_user_prot_reg()
users. cfi_cmdset_{0001, 0002} and onenand_base will pay the cost of an
explicit cast to discard the const qualifier since the beginning, since
they are using an otp_op_t function prototype that is used for both reads
and writes. mtd_dataflash and SPI NOR will benefit of the const buffer
because they are using different paths for writes and reads.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210403060931.7119-1-tudor.ambarus@microchip.com
Diffstat (limited to 'drivers/mtd/chips')
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0001.c | 7 | ||||
| -rw-r--r-- | drivers/mtd/chips/cfi_cmdset_0002.c | 6 |
2 files changed, 7 insertions, 6 deletions
diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index b7f5e7977dcd..54f92d09d9cf 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -72,7 +72,8 @@ static int cfi_intelext_is_locked(struct mtd_info *mtd, loff_t ofs, #ifdef CONFIG_MTD_OTP static int cfi_intelext_read_fact_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *); static int cfi_intelext_read_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *); -static int cfi_intelext_write_user_prot_reg (struct mtd_info *, loff_t, size_t, size_t *, u_char *); +static int cfi_intelext_write_user_prot_reg(struct mtd_info *, loff_t, size_t, + size_t *, const u_char *); static int cfi_intelext_lock_user_prot_reg (struct mtd_info *, loff_t, size_t); static int cfi_intelext_get_fact_prot_info(struct mtd_info *, size_t, size_t *, struct otp_info *); @@ -2447,10 +2448,10 @@ static int cfi_intelext_read_user_prot_reg(struct mtd_info *mtd, loff_t from, static int cfi_intelext_write_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, - u_char *buf) + const u_char *buf) { return cfi_intelext_otp_walk(mtd, from, len, retlen, - buf, do_otp_write, 1); + (u_char *)buf, do_otp_write, 1); } static int cfi_intelext_lock_user_prot_reg(struct mtd_info *mtd, diff --git a/drivers/mtd/chips/cfi_cmdset_0002.c b/drivers/mtd/chips/cfi_cmdset_0002.c index c5c9a4c3b027..3097e93787f7 100644 --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -80,7 +80,7 @@ static int cfi_amdstd_read_fact_prot_reg(struct mtd_info *, loff_t, size_t, static int cfi_amdstd_read_user_prot_reg(struct mtd_info *, loff_t, size_t, size_t *, u_char *); static int cfi_amdstd_write_user_prot_reg(struct mtd_info *, loff_t, size_t, - size_t *, u_char *); + size_t *, const u_char *); static int cfi_amdstd_lock_user_prot_reg(struct mtd_info *, loff_t, size_t); static int cfi_amdstd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, @@ -1635,9 +1635,9 @@ static int cfi_amdstd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, static int cfi_amdstd_write_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, - u_char *buf) + const u_char *buf) { - return cfi_amdstd_otp_walk(mtd, from, len, retlen, buf, + return cfi_amdstd_otp_walk(mtd, from, len, retlen, (u_char *)buf, do_otp_write, 1); } |