diff options
| -rw-r--r-- | drivers/mtd/spi-nor/spi-nor.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c index 3b2460efc019..7e5051e604b0 100644 --- a/drivers/mtd/spi-nor/spi-nor.c +++ b/drivers/mtd/spi-nor/spi-nor.c @@ -478,11 +478,13 @@ static int stm_is_locked_sr(struct spi_nor *nor, loff_t ofs, uint64_t len, static int stm_lock(struct spi_nor *nor, loff_t ofs, uint64_t len) { struct mtd_info *mtd = &nor->mtd; - u8 status_old, status_new; + int status_old, status_new; u8 mask = SR_BP2 | SR_BP1 | SR_BP0; u8 shift = ffs(mask) - 1, pow, val; status_old = read_sr(nor); + if (status_old < 0) + return status_old; /* SPI NOR always locks to the end */ if (ofs + len != mtd->size) { @@ -528,11 +530,13 @@ static int stm_lock(struct spi_nor *nor, loff_t ofs, uint64_t len) static int stm_unlock(struct spi_nor *nor, loff_t ofs, uint64_t len) { struct mtd_info *mtd = &nor->mtd; - uint8_t status_old, status_new; + int status_old, status_new; u8 mask = SR_BP2 | SR_BP1 | SR_BP0; u8 shift = ffs(mask) - 1, pow, val; status_old = read_sr(nor); + if (status_old < 0) + return status_old; /* Cannot unlock; would unlock larger region than requested */ if (stm_is_locked_sr(nor, status_old, ofs - mtd->erasesize, @@ -1032,6 +1036,8 @@ static int macronix_quad_enable(struct spi_nor *nor) int ret, val; val = read_sr(nor); + if (val < 0) + return val; write_enable(nor); write_sr(nor, val | SR_QUAD_EN_MX); |