diff options
Diffstat (limited to 'drivers/mtd/nand/nand_base.c')
| -rw-r--r-- | drivers/mtd/nand/nand_base.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index ed08e3946727..79d98c9fa8a7 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1421,7 +1421,10 @@ static int nand_check_erased_buf(void *buf, int len, int bitflips_threshold) for (; len >= sizeof(long); len -= sizeof(long), bitmap += sizeof(long)) { - weight = hweight_long(*((unsigned long *)bitmap)); + unsigned long d = *((unsigned long *)bitmap); + if (d == ~0UL) + continue; + weight = hweight_long(d); bitflips += BITS_PER_LONG - weight; if (unlikely(bitflips > bitflips_threshold)) return -EBADMSG; |