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/devices | |
| parent | ef4ed780d005d65b1a70ba7803233cace93a73ac (diff) | |
| download | lwn-1df1fc8c62f7527d953c7f3869930067bf5b3f29.tar.gz lwn-1df1fc8c62f7527d953c7f3869930067bf5b3f29.zip | |
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/devices')
| -rw-r--r-- | drivers/mtd/devices/mtd_dataflash.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index 6d1eefe94106..9802e265fca8 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -527,7 +527,7 @@ static int dataflash_read_user_otp(struct mtd_info *mtd, } static int dataflash_write_user_otp(struct mtd_info *mtd, - loff_t from, size_t len, size_t *retlen, u_char *buf) + loff_t from, size_t len, size_t *retlen, const u_char *buf) { struct spi_message m; const size_t l = 4 + 64; |