Messages in this thread Patch in this message | | | From | Ricardo Ribalda Delgado <> | Subject | [PATCH] mtd: spi-nor: Fix S3AN addressing calculation | Date | Wed, 18 Jan 2017 17:08:54 +0100 |
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The page calculation under spi_nor_s3an_addr_convert() was wrong. On Default Address Mode we need to perform a divide by page_size.
Fixes: 61cba34bd6c1 ("mtd: spi-nor: Add support for S3AN spi-nor devices") Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> --- drivers/mtd/spi-nor/spi-nor.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 2a643a1bb45e..a374532068f0 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -431,11 +431,15 @@ 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 ret; - offset %= nor->page_size; + offset = addr % nor->page_size; + ret = addr / nor->page_size; + ret <<= (nor->page_size > 512) ? 10 : 9; + ret |= offset; - return ((addr - offset) << 1) | offset; + return ret; } /* -- 2.11.0
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