[PATCH] mtd: rawnand: fsl_elbc: Remove NAND_NO_SUBPAGE_WRITE flag

["Pali Rohár" <pali@kernel.org>]

Subpage write support for freescale eLBC NAND controller driver is
implemented in U-Boot and was fixes in the commit d3963721d93f ("nand: Sync
with Linux v4.1").

So remove NAND_NO_SUBPAGE_WRITE flag from the fsl_elbc_nand.c driver. This
partially revert commit cb04c7723429 ("nand/fsl: add NAND_NO_SUBPAGE_WRITE
to eLBC and IFC drivers"), only eLBC driver part.

With this change U-Boot with default settings can read from NAND UBIFS
image created on Linux with Linux default settings. Prior this change
U-Boot was unable to read from NAND UBIFS images created with Linux default
settings due to differnet UBI geometry.

Linux kernel fsl_elbc_nand.c driver also does not set NAND_NO_SUBPAGE_WRITE
flag and has implemented subpage write support.

Fixes: cb04c7723429 ("nand/fsl: add NAND_NO_SUBPAGE_WRITE to eLBC and IFC drivers")
Fixes: d3963721d93f ("nand: Sync with Linux v4.1")
Signed-off-by: Pali Rohár <pali@kernel.org>
---
See also email thread:
https://lore.kernel.org/u-boot/20220807120027.2zz43afbqtqljhul@pali/t/#u
---
 drivers/mtd/nand/raw/fsl_elbc_nand.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/fsl_elbc_nand.c b/drivers/mtd/nand/raw/fsl_elbc_nand.c
index 48a3687f2728..e28670a4724a 100644
--- a/drivers/mtd/nand/raw/fsl_elbc_nand.c
+++ b/drivers/mtd/nand/raw/fsl_elbc_nand.c
@@ -732,7 +732,6 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr, struct udevice *dev)
 	nand->bbt_md = &bbt_mirror_descr;
 
 	/* set up nand options */
-	nand->options = NAND_NO_SUBPAGE_WRITE;
 	nand->bbt_options = NAND_BBT_USE_FLASH;
 
 	nand->controller = &elbc_ctrl->controller;
-- 
2.20.1