The patch below does not apply to the 5.15-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <stable@xxxxxxxxxxxxxxx>. To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.15.y git checkout FETCH_HEAD git cherry-pick -x a9180c298d3527f43563d02a62cb9e7e145642c6 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to '<stable@xxxxxxxxxxxxxxx>' --in-reply-to '2023050738-mobilize-unwrapped-91ca@gregkh' --subject-prefix 'PATCH 5.15.y' HEAD^.. Possible dependencies: a9180c298d35 ("mtd: spi-nor: spansion: Enable JFFS2 write buffer for S25FS256T") 6afcc84080c4 ("mtd: spi-nor: spansion: Add support for Infineon S25FS256T") b6b23833fc42 ("mtd: spi-nor: spansion: Add s25hl-t/s25hs-t IDs and fixups") a6b50aa12796 ("mtd: spi-nor: spansion: Add local function to discover page size") c0abb861c5d0 ("mtd: spi-nor: Introduce templates for SPI NOR operations") 27ff0d34fb7e ("mtd: spi-nor: spansion: Rework spi_nor_cypress_octal_dtr_enable()") 4629adaff7bc ("mtd: spi-nor: micron-st: Rework spi_nor_micron_octal_dtr_enable()") a007d81aa525 ("mtd: spi-nor: manufacturers: Use spi_nor_read_id() core method") 86b6b55ffbbc ("mtd: spi-nor: core: Introduce method for RDID op") bffabd1c727d ("mtd: spi-nor: core: Use auto-detection only once") 837d5181beef ("mtd: spi-nor: move all spansion specifics into spansion.c") 6235ff040c13 ("mtd: spi-nor: spansion: slightly rework control flow in late_init()") c770abe52d81 ("mtd: spi-nor: move all micron-st specifics into micron-st.c") 8b7a2e00d117 ("mtd: spi-nor: xilinx: rename vendor specific functions and defines") 8b4195cd6dc3 ("mtd: spi-nor: move all xilinx specifics into xilinx.c") 9fb4beb1b051 ("mtd: spi-nor: guard _page_size parameter in S3AN_INFO()") 4cf1c7bdc55c ("mtd: spi-nor: allow a flash to define its own ready() function") b44aa9ac6bb4 ("mtd: spi-nor: slightly refactor the spi_nor_setup()") 45acce2099c5 ("mtd: spi-nor: xilinx: unify function names") fedd0cbf3e93 ("mtd: spi-nor: spansion: unify function names") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From a9180c298d3527f43563d02a62cb9e7e145642c6 Mon Sep 17 00:00:00 2001 From: Takahiro Kuwano <Takahiro.Kuwano@xxxxxxxxxxxx> Date: Thu, 6 Apr 2023 15:17:46 +0900 Subject: [PATCH] mtd: spi-nor: spansion: Enable JFFS2 write buffer for S25FS256T Infineon(Cypress) SEMPER NOR flash family has on-die ECC and its program granularity is 16-byte ECC data unit size. JFFS2 supports write buffer mode for ECC'd NOR flash. Provide a way to clear the MTD_BIT_WRITEABLE flag in order to enable JFFS2 write buffer mode support. Drop the comment as the same info is now specified in cypress_nor_ecc_init(). Fixes: 6afcc84080c4 ("mtd: spi-nor: spansion: Add support for Infineon S25FS256T") Suggested-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxx> Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano@xxxxxxxxxxxx> Cc: stable@xxxxxxxxxxxxxxx Link: https://lore.kernel.org/r/641bfb26c6e059915ae920117b7ec278df1a6f0a.1680760742.git.Takahiro.Kuwano@xxxxxxxxxxxx Signed-off-by: Tudor Ambarus <tudor.ambarus@xxxxxxxxxx> diff --git a/drivers/mtd/spi-nor/spansion.c b/drivers/mtd/spi-nor/spansion.c index 4d0cc10e3d85..ffeede78700d 100644 --- a/drivers/mtd/spi-nor/spansion.c +++ b/drivers/mtd/spi-nor/spansion.c @@ -384,13 +384,7 @@ static void s25fs256t_post_sfdp_fixup(struct spi_nor *nor) static void s25fs256t_late_init(struct spi_nor *nor) { - /* - * Programming is supported only in 16-byte ECC data unit granularity. - * Byte-programming, bit-walking, or multiple program operations to the - * same ECC data unit without an erase are not allowed. See chapter - * 5.3.1 and 5.6 in the datasheet. - */ - nor->params->writesize = 16; + cypress_nor_ecc_init(nor); } static struct spi_nor_fixups s25fs256t_fixups = {
