1 files changed, 4 insertions, 3 deletions

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 20f31567ccee..700c5b9b3583 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -841,7 +841,8 @@ static inline int ata_id_current_chs_valid(const u16 *id)
 
 static inline int ata_id_is_cfa(const u16 *id)
 {
-        if (id[ATA_ID_CONFIG] == 0x848A)        /* Traditional CF */
+        if ((id[ATA_ID_CONFIG] == 0x848A) ||    /* Traditional CF */
+            (id[ATA_ID_CONFIG] == 0x844A))      /* Delkin Devices CF */
                 return 1;
         /*
          * CF specs don't require specific value in the word 0 anymore and yet
@@ -1024,8 +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)