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-rw-r--r--include/linux/ata.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/ata.h b/include/linux/ata.h
index b4c85e2adef..700c5b9b358 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -1025,8 +1025,8 @@ static inline int ata_ok(u8 status)
static inline int lba_28_ok(u64 block, u32 n_block)
{
- /* check the ending block number */
- return ((block + n_block) < ((u64)1 << 28)) && (n_block <= 256);
+ /* check the ending block number: must be LESS THAN 0x0fffffff */
+ return ((block + n_block) < ((1 << 28) - 1)) && (n_block <= 256);
}
static inline int lba_48_ok(u64 block, u32 n_block)