diff options
| author | Michal Suchanek <hramrach@gmail.com> | 2016-05-05 17:31:47 -0700 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2016-06-01 17:22:28 -0700 |
| commit | 59451e1233bd315c5379a631838a03d80e689581 (patch) | |
| tree | de1e470748fc0889960466435abb6f672d311ca1 /include/linux/mtd | |
| parent | becc7ae544c61395b5eba7b9913e14aa567ca07a (diff) | |
mtd: spi-nor: change return value of read/write
Change the return value of spi-nor device read and write methods to
allow returning amount of data transferred and errors as
read(2)/write(2) does.
Also, start handling positive returns in spi_nor_read(), since we want
to convert drivers to start returning the read-length both via *retlen
and the return code. (We don't need to do the same transition process
for spi_nor_write(), since ->write() didn't used to have a return code
at all.)
Signed-off-by: Michal Suchanek <hramrach@gmail.com>
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Tested-by Cyrille Pitchen <cyrille.pitchen@atmel.com>
Acked-by: Michal Suchanek <hramrach@gmail.com>
Tested-by: Michal Suchanek <hramrach@gmail.com>
Diffstat (limited to 'include/linux/mtd')
| -rw-r--r-- | include/linux/mtd/spi-nor.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index 7f041bd88b82..34680a493156 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -173,9 +173,9 @@ struct spi_nor { int (*read_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len); int (*write_reg)(struct spi_nor *nor, u8 opcode, u8 *buf, int len); - int (*read)(struct spi_nor *nor, loff_t from, + ssize_t (*read)(struct spi_nor *nor, loff_t from, size_t len, size_t *retlen, u_char *read_buf); - void (*write)(struct spi_nor *nor, loff_t to, + ssize_t (*write)(struct spi_nor *nor, loff_t to, size_t len, size_t *retlen, const u_char *write_buf); int (*erase)(struct spi_nor *nor, loff_t offs); |