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| 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 /drivers/mtd/spi-nor/spi-nor.c | |
| parent | MAINTAINERS: Add file patterns for mtd device tree bindings (diff) | |
| download | linux-dev-59451e1233bd315c5379a631838a03d80e689581.tar.xz linux-dev-59451e1233bd315c5379a631838a03d80e689581.zip | |
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 'drivers/mtd/spi-nor/spi-nor.c')
| -rw-r--r-- | drivers/mtd/spi-nor/spi-nor.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index c52e45594bfd..6c92b9524c8b 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -1034,7 +1034,10 @@ static int spi_nor_read(struct mtd_info *mtd, loff_t from, size_t len, ret = nor->read(nor, from, len, retlen, buf); spi_nor_unlock_and_unprep(nor, SPI_NOR_OPS_READ); - return ret; + if (ret < 0) + return ret; + + return 0; } static int sst_write(struct mtd_info *mtd, loff_t to, size_t len, |