mirror of https://github.com/hak5/openwrt.git
36 lines
1.1 KiB
Diff
36 lines
1.1 KiB
Diff
From 5f0e0758efddef5b06994a76d8c7f0b8a4c1daae Mon Sep 17 00:00:00 2001
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From: Ricardo Ribalda <ricardo.ribalda@gmail.com>
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Date: Wed, 18 Jan 2017 17:40:16 +0100
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Subject: [PATCH] mtd: spi-nor: Fix S3AN addressing calculation
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The page calculation under spi_nor_s3an_addr_convert() was wrong. On
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Default Address Mode we need to perform a divide by page_size.
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Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
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Acked-by: Marek Vasut <marek.vasut@gmail.com>
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Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
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---
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drivers/mtd/spi-nor/spi-nor.c | 9 ++++++---
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1 file changed, 6 insertions(+), 3 deletions(-)
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--- a/drivers/mtd/spi-nor/spi-nor.c
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+++ b/drivers/mtd/spi-nor/spi-nor.c
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@@ -431,11 +431,14 @@ static void spi_nor_unlock_and_unprep(st
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*/
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static loff_t spi_nor_s3an_addr_convert(struct spi_nor *nor, unsigned int addr)
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{
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- unsigned int offset = addr;
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+ unsigned int offset;
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+ unsigned int page;
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- offset %= nor->page_size;
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+ offset = addr % nor->page_size;
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+ page = addr / nor->page_size;
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+ page <<= (nor->page_size > 512) ? 10 : 9;
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- return ((addr - offset) << 1) | offset;
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+ return page | offset;
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}
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/*
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