[PATCH v3 3/3] mtd: spi-nor: spansion: Enable JFFS2 write buffer for S25FS256T

[tkuw584924 at gmail.com]

From: Takahiro Kuwano <Takahiro.Kuwano at infineon.com>

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 at linaro.org>
Signed-off-by: Takahiro Kuwano <Takahiro.Kuwano at infineon.com>
Cc: stable at vger.kernel.org
---
 drivers/mtd/spi-nor/spansion.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

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 = {
-- 
2.34.1