diff options
| author | Brian Norris <computersforpeace@gmail.com> | 2015-12-15 10:48:20 -0800 |
|---|---|---|
| committer | Brian Norris <computersforpeace@gmail.com> | 2016-01-05 16:00:03 -0800 |
| commit | 67b9bcd36906e12a15ffec19463afbbd6a41660e (patch) | |
| tree | 19adb5fb993d851e177a9d958f102844ce87bc5a /include/linux/mtd | |
| parent | 472b444eef934eb7e90334efdd7fc7954cfe5132 (diff) | |
| download | linux-67b9bcd36906e12a15ffec19463afbbd6a41660e.tar.gz linux-67b9bcd36906e12a15ffec19463afbbd6a41660e.tar.bz2 linux-67b9bcd36906e12a15ffec19463afbbd6a41660e.zip | |
mtd: spi-nor: fix Spansion regressions (aliased with Winbond)
Spansion and Winbond have occasionally used the same manufacturer ID,
and they don't support the same features. Particularly, writing SR=0
seems to break read access for Spansion's s25fl064k. Unfortunately, we
don't currently have a way to differentiate these Spansion and Winbond
parts, so rather than regressing support for these Spansion flash, let's
drop the new Winbond lock/unlock support for now. We can try to address
Winbond support during the next release cycle.
Original discussion:
http://patchwork.ozlabs.org/patch/549173/
http://patchwork.ozlabs.org/patch/553683/
Fixes: 357ca38d4751 ("mtd: spi-nor: support lock/unlock/is_locked for Winbond")
Fixes: c6fc2171b249 ("mtd: spi-nor: disable protection for Winbond flash at startup")
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Reported-by: Felix Fietkau <nbd@openwrt.org>
Cc: Felix Fietkau <nbd@openwrt.org>
Diffstat (limited to 'include/linux/mtd')
| -rw-r--r-- | include/linux/mtd/spi-nor.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h index c8723b62c4cd..bc742dac7d3a 100644 --- a/include/linux/mtd/spi-nor.h +++ b/include/linux/mtd/spi-nor.h @@ -25,7 +25,7 @@ #define SNOR_MFR_MACRONIX CFI_MFR_MACRONIX #define SNOR_MFR_SPANSION CFI_MFR_AMD #define SNOR_MFR_SST CFI_MFR_SST -#define SNOR_MFR_WINBOND 0xef +#define SNOR_MFR_WINBOND 0xef /* Also used by some Spansion */ /* * Note on opcode nomenclature: some opcodes have a format like |