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/mtdcore.c | |
| 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/mtdcore.c')
| -rw-r--r-- | drivers/mtd/mtdcore.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 0bc6871c3863..9aaeadd53eb4 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -1889,7 +1889,7 @@ int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len, EXPORT_SYMBOL_GPL(mtd_read_user_prot_reg); int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len, - size_t *retlen, u_char *buf) + size_t *retlen, const u_char *buf) { struct mtd_info *master = mtd_get_master(mtd); int ret; |