diff options
Diffstat (limited to 'target/linux/generic/pending-4.9/466-Revert-mtd-spi-nor-fix-Spansion-regressions-aliased-.patch')
| -rw-r--r-- | target/linux/generic/pending-4.9/466-Revert-mtd-spi-nor-fix-Spansion-regressions-aliased-.patch | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.9/466-Revert-mtd-spi-nor-fix-Spansion-regressions-aliased-.patch b/target/linux/generic/pending-4.9/466-Revert-mtd-spi-nor-fix-Spansion-regressions-aliased-.patch new file mode 100644 index 0000000000..e032b08f4d --- /dev/null +++ b/target/linux/generic/pending-4.9/466-Revert-mtd-spi-nor-fix-Spansion-regressions-aliased-.patch @@ -0,0 +1,37 @@ +From: Matthias Schiffer <mschiffer@universe-factory.net> +Date: Tue, 9 Jan 2018 20:41:48 +0100 +Subject: [PATCH] Revert "mtd: spi-nor: fix Spansion regressions (aliased with + Winbond)" + +This reverts commit 67b9bcd36906e12a15ffec19463afbbd6a41660e. + +The underlying issue breaking Spansion flash has been fixed with "mtd: spi-nor: +wait until lock/unlock operations are ready" and "mtd: spi-nor: wait for SR_WIP +to clear on initial unlock", so we can support unlocking for Winbond flash +again. + +Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net> +--- + drivers/mtd/spi-nor/spi-nor.c | 4 +++- + 1 file changed, 3 insertions(+), 1 deletion(-) + +--- a/drivers/mtd/spi-nor/spi-nor.c ++++ b/drivers/mtd/spi-nor/spi-nor.c +@@ -1597,6 +1597,7 @@ int spi_nor_scan(struct spi_nor *nor, co + JEDEC_MFR(info) == SNOR_MFR_INTEL || + JEDEC_MFR(info) == SNOR_MFR_MACRONIX || + JEDEC_MFR(info) == SNOR_MFR_SST || ++ JEDEC_MFR(info) == SNOR_MFR_WINBOND || + info->flags & SPI_NOR_HAS_LOCK) { + write_enable(nor); + write_sr(nor, 0); +@@ -1615,7 +1616,8 @@ int spi_nor_scan(struct spi_nor *nor, co + + /* NOR protection support for STmicro/Micron chips and similar */ + if (JEDEC_MFR(info) == SNOR_MFR_MICRON || +- info->flags & SPI_NOR_HAS_LOCK) { ++ JEDEC_MFR(info) == SNOR_MFR_WINBOND || ++ info->flags & SPI_NOR_HAS_LOCK) { + nor->flash_lock = stm_lock; + nor->flash_unlock = stm_unlock; + nor->flash_is_locked = stm_is_locked; |