1 files changed, 29 insertions, 61 deletions

diff --git a/drivers/ide/pci/it821x.c b/drivers/ide/pci/it821x.c
index 758a98230cc..1b69d82478c 100644
--- a/drivers/ide/pci/it821x.c
+++ b/drivers/ide/pci/it821x.c
@@ -229,24 +229,24 @@ static void it821x_clock_strategy(ide_drive_t *drive)
 }
 
 /**
- *      it821x_tunepio  -       tune a drive
- *      @drive: drive to tune
- *      @pio: the desired PIO mode
+ *      it821x_set_pio_mode     -       set host controller for PIO mode
+ *      @drive: drive
+ *      @pio: PIO mode number
  *
- *      Try to tune the drive/host to the desired PIO mode taking into
- *      the consideration the maximum PIO mode supported by the other
- *      device on the cable.
+ *      Tune the host to the desired PIO mode taking into the consideration
+ *      the maximum PIO mode supported by the other device on the cable.
  */
 
-static int it821x_tunepio(ide_drive_t *drive, u8 set_pio)
+static void it821x_set_pio_mode(ide_drive_t *drive, const u8 pio)
 {
         ide_hwif_t *hwif        = drive->hwif;
         struct it821x_dev *itdev = ide_get_hwifdata(hwif);
         int unit = drive->select.b.unit;
         ide_drive_t *pair = &hwif->drives[1 - unit];
+        u8 set_pio = pio;
 
         /* Spec says 89 ref driver uses 88 */
-        static u16 pio[]        = { 0xAA88, 0xA382, 0xA181, 0x3332, 0x3121 };
+        static u16 pio_timings[]= { 0xAA88, 0xA382, 0xA181, 0x3332, 0x3121 };
         static u8 pio_want[]    = { ATA_66, ATA_66, ATA_66, ATA_66, ATA_ANY };
 
         /*
@@ -261,22 +261,12 @@ static int it821x_tunepio(ide_drive_t *drive, u8 set_pio)
                         set_pio = pair_pio;
         }
 
-        if (itdev->smart)
-                return 0;
-
         /* We prefer 66Mhz clock for PIO 0-3, don't care for PIO4 */
         itdev->want[unit][1] = pio_want[set_pio];
         itdev->want[unit][0] = 1;       /* PIO is lowest priority */
-        itdev->pio[unit] = pio[set_pio];
+        itdev->pio[unit] = pio_timings[set_pio];
         it821x_clock_strategy(drive);
         it821x_program(drive, itdev->pio[unit]);
-
-        return ide_config_drive_speed(drive, XFER_PIO_0 + set_pio);
-}
-
-static void it821x_set_pio_mode(ide_drive_t *drive, const u8 pio)
-{
-        (void)it821x_tunepio(drive, pio);
 }
 
 /**
@@ -405,47 +395,24 @@ static int it821x_dma_end(ide_drive_t *drive)
 }
 
 /**
- *      it821x_tune_chipset     -       set controller timings
- *      @drive: Drive to set up
- *      @speed: speed we want to achieve
+ *      it821x_set_dma_mode     -       set host controller for DMA mode
+ *      @drive: drive
+ *      @speed: DMA mode
  *
- *      Tune the ITE chipset for the desired mode.
+ *      Tune the ITE chipset for the desired DMA mode.
  */
 
-static int it821x_tune_chipset(ide_drive_t *drive, const u8 speed)
+static void it821x_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
-
-        ide_hwif_t *hwif        = drive->hwif;
-        struct it821x_dev *itdev = ide_get_hwifdata(hwif);
-
-        if (itdev->smart == 0) {
-                switch (speed) {
-                        /* MWDMA tuning is really hard because our MWDMA and PIO
-                           timings are kept in the same place. We can switch in the
-                           host dma on/off callbacks */
-                        case XFER_MW_DMA_2:
-                        case XFER_MW_DMA_1:
-                        case XFER_MW_DMA_0:
-                                it821x_tune_mwdma(drive, (speed - XFER_MW_DMA_0));
-                                break;
-                        case XFER_UDMA_6:
-                        case XFER_UDMA_5:
-                        case XFER_UDMA_4:
-                        case XFER_UDMA_3:
-                        case XFER_UDMA_2:
-                        case XFER_UDMA_1:
-                        case XFER_UDMA_0:
-                                it821x_tune_udma(drive, (speed - XFER_UDMA_0));
-                                break;
-                        default:
-                                return 1;
-                }
-
-                return ide_config_drive_speed(drive, speed);
-        }
-
-        /* don't touch anything in the smart mode */
-        return 0;
+        /*
+         * MWDMA tuning is really hard because our MWDMA and PIO
+         * timings are kept in the same place.  We can switch in the
+         * host dma on/off callbacks.
+         */
+        if (speed >= XFER_UDMA_0 && speed <= XFER_UDMA_6)
+                it821x_tune_udma(drive, speed - XFER_UDMA_0);
+        else if (speed >= XFER_MW_DMA_0 && speed <= XFER_MW_DMA_2)
+                it821x_tune_mwdma(drive, speed - XFER_MW_DMA_0);
 }
 
 /**
@@ -629,14 +596,15 @@ static void __devinit init_hwif_it821x(ide_hwif_t *hwif)
                         printk(KERN_WARNING "it821x: Revision 0x10, workarounds activated.\n");
         }
 
-        hwif->speedproc = &it821x_tune_chipset;
-        hwif->set_pio_mode = &it821x_set_pio_mode;
+        if (idev->smart == 0) {
+                hwif->set_pio_mode = &it821x_set_pio_mode;
+                hwif->set_dma_mode = &it821x_set_dma_mode;
 
-        /* MWDMA/PIO clock switching for pass through mode */
-        if(!idev->smart) {
+                /* MWDMA/PIO clock switching for pass through mode */
                 hwif->dma_start = &it821x_dma_start;
                 hwif->ide_dma_end = &it821x_dma_end;
-        }
+        } else
+                hwif->host_flags |= IDE_HFLAG_NO_SET_MODE;
 
         hwif->drives[0].autotune = 1;
         hwif->drives[1].autotune = 1;