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| author | Ricardo Ribalda <ricardo.ribalda@gmail.com> | 2017-01-18 17:40:16 +0100 |
|---|---|---|
| committer | Cyrille Pitchen <cyrille.pitchen@atmel.com> | 2017-02-10 14:21:59 +0100 |
| commit | 56c5c328962b26e6dc844b4e8e643f145974c04e (patch) | |
| tree | 43d80286466abd44b1965514fd4d7b065fd3e838 /drivers/mtd | |
| parent | f40a2725ea720a6270d3970cf11472da66924624 (diff) | |
| download | linux-56c5c328962b26e6dc844b4e8e643f145974c04e.tar.gz linux-56c5c328962b26e6dc844b4e8e643f145974c04e.tar.bz2 linux-56c5c328962b26e6dc844b4e8e643f145974c04e.zip | |
mtd: spi-nor: Fix S3AN addressing calculation
The page calculation under spi_nor_s3an_addr_convert() was wrong. On
Default Address Mode we need to perform a divide by page_size.
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/spi-nor/spi-nor.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 5f8b475255cd..c042320a76cb 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -431,11 +431,14 @@ static void spi_nor_unlock_and_unprep(struct spi_nor *nor, enum spi_nor_ops ops) */ static loff_t spi_nor_s3an_addr_convert(struct spi_nor *nor, unsigned int addr) { - unsigned int offset = addr; + unsigned int offset; + unsigned int page; - offset %= nor->page_size; + offset = addr % nor->page_size; + page = addr / nor->page_size; + page <<= (nor->page_size > 512) ? 10 : 9; - return ((addr - offset) << 1) | offset; + return page | offset; } /* |