1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index a388a8df0043..cf707029352e 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -1037,7 +1037,7 @@ static unsigned int ata_id_xfermask(const u16 *id)
                  * the PIO timing number for the maximum. Turn it into
                  * a mask.
                  */
-                u8 mode = id[ATA_ID_OLD_PIO_MODES] & 0xFF;
+                u8 mode = (id[ATA_ID_OLD_PIO_MODES] >> 8) & 0xFF;
                 if (mode < 5)   /* Valid PIO range */
                         pio_mask = (2 << mode) - 1;
                 else