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mtd: spinand: macronix: Fix ECC Status Read

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The datasheet specifies the upper four bits are reserved.
Testing on real hardware shows that these bits can indeed be nonzero.

Signed-off-by: Emil Lenngren <emil.lenngren@gmail.com>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
This commit is contained in:
Emil Lenngren 2018-12-20 13:46:58 +01:00 committed by Miquel Raynal
parent 67c88008c3
commit f4cb4d7b46
1 changed files with 7 additions and 1 deletions
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8
drivers/mtd/nand/spi/macronix.c
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@ -10,6 +10,7 @@
#include <linux/mtd/spinand.h>
#define SPINAND_MFR_MACRONIX 0xC2
#define MACRONIX_ECCSR_MASK 0x0F
static SPINAND_OP_VARIANTS(read_cache_variants,
SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
@ -55,7 +56,12 @@ static int mx35lf1ge4ab_get_eccsr(struct spinand_device *spinand, u8 *eccsr)
SPI_MEM_OP_DUMMY(1, 1),
SPI_MEM_OP_DATA_IN(1, eccsr, 1));
return spi_mem_exec_op(spinand->spimem, &op);
int ret = spi_mem_exec_op(spinand->spimem, &op);
if (ret)
return ret;
*eccsr &= MACRONIX_ECCSR_MASK;
return 0;
}
static int mx35lf1ge4ab_ecc_get_status(struct spinand_device *spinand,