1 files changed, 2 insertions, 12 deletions

diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index eb4445b229ed..dbbb46819a2d 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -91,19 +91,9 @@ static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed)
         pci_read_config_word(dev, 0x48, &reg48);
         pci_read_config_word(dev, 0x4a, &reg4a);
 
-        switch(speed) {
-                case XFER_UDMA_4:       u_speed = 4 << (drive->dn * 4); break;
-                case XFER_UDMA_3:       u_speed = 3 << (drive->dn * 4); break;
-                case XFER_UDMA_2:       u_speed = 2 << (drive->dn * 4); break;
-                case XFER_UDMA_1:       u_speed = 1 << (drive->dn * 4); break;
-                case XFER_UDMA_0:       u_speed = 0 << (drive->dn * 4); break;
-                case XFER_MW_DMA_2:
-                case XFER_MW_DMA_1:
-                case XFER_SW_DMA_2:     break;
-                default:                return;
-        }
-
         if (speed >= XFER_UDMA_0) {
+                u_speed = (speed - XFER_UDMA_0) << (drive->dn * 4);
+
                 if (!(reg48 & u_flag))
                         pci_write_config_word(dev, 0x48, reg48|u_flag);
                 /* FIXME: (reg4a & a_speed) ? */