1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/ata/pata_legacy.c b/drivers/ata/pata_legacy.c
index 4fe9d2138d48..be816428b430 100644
--- a/drivers/ata/pata_legacy.c
+++ b/drivers/ata/pata_legacy.c
@@ -542,7 +542,7 @@ static void opti82c46x_set_piomode(struct ata_port *ap, struct ata_device *adev)
         u8 sysclk;
 
         /* Get the clock */
-        sysclk = opti_syscfg(0xAC) & 0xC0;      /* BIOS set */
+        sysclk = (opti_syscfg(0xAC) & 0xC0) >> 6;       /* BIOS set */
 
         /* Enter configuration mode */
         ioread16(ap->ioaddr.error_addr);