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| author | Emil Lenngren <emil.lenngren@gmail.com> | 2018-12-20 15:46:58 +0300 |
|---|---|---|
| committer | Miquel Raynal <miquel.raynal@bootlin.com> | 2019-02-05 17:39:39 +0300 |
| commit | f4cb4d7b46f6409382fd981eec9556e1f3c1dc5d (patch) | |
| tree | da298312da7080cdd03a066f2875e4d07053cb43 /drivers | |
| parent | 67c88008c3e24a30c3c695be69509edb47c3d572 (diff) | |
| download | linux-f4cb4d7b46f6409382fd981eec9556e1f3c1dc5d.tar.xz | |
mtd: spinand: macronix: Fix ECC Status Read
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/nand/spi/macronix.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c index 98f6b9c4b684..d16b57081c95 100644 --- a/drivers/mtd/nand/spi/macronix.c +++ b/drivers/mtd/nand/spi/macronix.c @@ -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, |