ide: change ->set_pio_mode method parameters

Change ->set_pio_mode method parameters to match ->set_piomode method
used in struct ata_port_operations.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

43 files changed, 128 insertions, 120 deletions

diff --git a/drivers/ide/aec62xx.c b/drivers/ide/aec62xx.c
index 4c869872eb9a..3790847361c3 100644
--- a/drivers/ide/aec62xx.c
+++ b/drivers/ide/aec62xx.c
@@ -134,10 +134,10 @@ static void aec6260_set_mode(ide_drive_t *drive, const u8 speed)
         local_irq_restore(flags);
 }
 
-static void aec_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void aec_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        drive->dma_mode = pio + XFER_PIO_0;
-        drive->hwif->port_ops->set_dma_mode(drive, pio + XFER_PIO_0);
+        drive->dma_mode = drive->pio_mode;
+        hwif->port_ops->set_dma_mode(drive, drive->dma_mode);
 }
 
 static int init_chipset_aec62xx(struct pci_dev *dev)
diff --git a/drivers/ide/ali14xx.c b/drivers/ide/ali14xx.c
index 90da1f953ed0..25b9fe3a9f8e 100644
--- a/drivers/ide/ali14xx.c
+++ b/drivers/ide/ali14xx.c
@@ -109,13 +109,14 @@ static DEFINE_SPINLOCK(ali14xx_lock);
  * This function computes timing parameters
  * and sets controller registers accordingly.
  */
-static void ali14xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void ali14xx_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         int driveNum;
         int time1, time2;
         u8 param1, param2, param3, param4;
         unsigned long flags;
         int bus_speed = ide_vlb_clk ? ide_vlb_clk : 50;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
         struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
 
         /* calculate timing, according to PIO mode */
diff --git a/drivers/ide/alim15x3.c b/drivers/ide/alim15x3.c
index 8f03cce055fa..28cee1055f76 100644
--- a/drivers/ide/alim15x3.c
+++ b/drivers/ide/alim15x3.c
@@ -63,15 +63,14 @@ static void ali_fifo_control(ide_hwif_t *hwif, ide_drive_t *drive, int on)
 
 /**
  *      ali_set_pio_mode        -       set host controller for PIO mode
+ *      @hwif: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      Program the controller for the given PIO mode.
  */
 
-static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void ali_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         struct pci_dev *dev = to_pci_dev(hwif->dev);
         int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
         unsigned long T =  1000000 / bus_speed; /* PCI clock based */
@@ -79,7 +78,7 @@ static void ali_set_pio_mode(ide_drive_t *drive, const u8 pio)
         u8 unit = drive->dn & 1;
         struct ide_timing t;
 
-        ide_timing_compute(drive, XFER_PIO_0 + pio, &t, T, 1);
+        ide_timing_compute(drive, drive->pio_mode, &t, T, 1);
 
         t.setup = clamp_val(t.setup, 1, 8) & 7;
         t.active = clamp_val(t.active, 1, 8) & 7;
diff --git a/drivers/ide/amd74xx.c b/drivers/ide/amd74xx.c
index 108e9b676859..3eee7be7ca6f 100644
--- a/drivers/ide/amd74xx.c
+++ b/drivers/ide/amd74xx.c
@@ -108,9 +108,9 @@ static void amd_set_drive(ide_drive_t *drive, const u8 speed)
  * amd_set_pio_mode() is a callback from upper layers for PIO-only tuning.
  */
 
-static void amd_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void amd_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        amd_set_drive(drive, XFER_PIO_0 + pio);
+        amd_set_drive(drive, drive->pio_mode);
 }
 
 static void amd7409_cable_detect(struct pci_dev *dev)
diff --git a/drivers/ide/at91_ide.c b/drivers/ide/at91_ide.c
index 248219a89a68..000a78e5246c 100644
--- a/drivers/ide/at91_ide.c
+++ b/drivers/ide/at91_ide.c
@@ -172,11 +172,12 @@ static void at91_ide_output_data(ide_drive_t *drive, struct ide_cmd *cmd,
         leave_16bit(chipselect, mode);
 }
 
-static void at91_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void at91_ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         struct ide_timing *timing;
-        u8 chipselect = drive->hwif->select_data;
+        u8 chipselect = hwif->select_data;
         int use_iordy = 0;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         pdbg("chipselect %u pio %u\n", chipselect, pio);
 
diff --git a/drivers/ide/atiixp.c b/drivers/ide/atiixp.c
index 837322b10a4c..b6848dfb93b0 100644
--- a/drivers/ide/atiixp.c
+++ b/drivers/ide/atiixp.c
@@ -42,19 +42,20 @@ static DEFINE_SPINLOCK(atiixp_lock);
 
 /**
  *      atiixp_set_pio_mode     -       set host controller for PIO mode
+ *      @hwif: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      Set the interface PIO mode.
  */
 
-static void atiixp_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void atiixp_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
+        struct pci_dev *dev = to_pci_dev(hwif->dev);
         unsigned long flags;
         int timing_shift = (drive->dn ^ 1) * 8;
         u32 pio_timing_data;
         u16 pio_mode_data;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         spin_lock_irqsave(&atiixp_lock, flags);
 
diff --git a/drivers/ide/au1xxx-ide.c b/drivers/ide/au1xxx-ide.c
index 87cef0c440ad..c90e9b0a9f6e 100644
--- a/drivers/ide/au1xxx-ide.c
+++ b/drivers/ide/au1xxx-ide.c
@@ -99,12 +99,11 @@ static void au1xxx_output_data(ide_drive_t *drive, struct ide_cmd *cmd,
 }
 #endif
 
-static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void au1xxx_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2);
 
-        /* set pio mode! */
-        switch(pio) {
+        switch (drive->pio_mode - XFER_PIO_0) {
         case 0:
                 mem_sttime = SBC_IDE_TIMING(PIO0);
 
diff --git a/drivers/ide/cmd640.c b/drivers/ide/cmd640.c
index 1a32d62ed86b..c7d46a3d347a 100644
--- a/drivers/ide/cmd640.c
+++ b/drivers/ide/cmd640.c
@@ -572,9 +572,10 @@ static void cmd640_set_mode(ide_drive_t *drive, unsigned int index,
         program_drive_counts(drive, index);
 }
 
-static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void cmd640_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         unsigned int index = 0, cycle_time;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
         u8 b;
 
         switch (pio) {
diff --git a/drivers/ide/cmd64x.c b/drivers/ide/cmd64x.c
index 9f89f3116df0..0b11745937e7 100644
--- a/drivers/ide/cmd64x.c
+++ b/drivers/ide/cmd64x.c
@@ -127,8 +127,10 @@ static void cmd64x_program_timings(ide_drive_t *drive, u8 mode)
  * Special cases are 8: prefetch off, 9: prefetch on (both never worked)
  */
 
-static void cmd64x_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void cmd64x_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
+
         /*
          * Filter out the prefetch control values
          * to prevent PIO5 from being programmed
diff --git a/drivers/ide/cs5520.c b/drivers/ide/cs5520.c
index 09f98ed0731f..b8094f049f3e 100644
--- a/drivers/ide/cs5520.c
+++ b/drivers/ide/cs5520.c
@@ -57,11 +57,11 @@ static struct pio_clocks cs5520_pio_clocks[]={
         {1, 2, 1}
 };
 
-static void cs5520_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void cs5520_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         struct pci_dev *pdev = to_pci_dev(hwif->dev);
         int controller = drive->dn > 1 ? 1 : 0;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         /* 8bit CAT/CRT - 8bit command timing for channel */
         pci_write_config_byte(pdev, 0x62 + controller, 
@@ -85,7 +85,8 @@ static void cs5520_set_dma_mode(ide_drive_t *drive, const u8 speed)
 {
         printk(KERN_ERR "cs55x0: bad ide timing.\n");
 
-        cs5520_set_pio_mode(drive, 0);
+        drive->pio_mode = XFER_PIO_0 + 0;
+        cs5520_set_pio_mode(drive->hwif, drive);
 }
 
 static const struct ide_port_ops cs5520_port_ops = {
diff --git a/drivers/ide/cs5530.c b/drivers/ide/cs5530.c
index 40bf05eddf6e..4ced40255ad6 100644
--- a/drivers/ide/cs5530.c
+++ b/drivers/ide/cs5530.c
@@ -41,8 +41,8 @@ static unsigned int cs5530_pio_timings[2][5] = {
 
 /**
  *      cs5530_set_pio_mode     -       set host controller for PIO mode
+ *      @hwif: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      Handles setting of PIO mode for the chipset.
  *
@@ -50,10 +50,11 @@ static unsigned int cs5530_pio_timings[2][5] = {
  *      will have valid default PIO timings set up before we get here.
  */
 
-static void cs5530_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void cs5530_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        unsigned long basereg = CS5530_BASEREG(drive->hwif);
+        unsigned long basereg = CS5530_BASEREG(hwif);
         unsigned int format = (inl(basereg + 4) >> 31) & 1;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         outl(cs5530_pio_timings[format][pio], basereg + ((drive->dn & 1)<<3));
 }
diff --git a/drivers/ide/cs5535.c b/drivers/ide/cs5535.c
index b883838adc24..7974415ea89f 100644
--- a/drivers/ide/cs5535.c
+++ b/drivers/ide/cs5535.c
@@ -142,15 +142,15 @@ static void cs5535_set_dma_mode(ide_drive_t *drive, const u8 speed)
 
 /**
  *      cs5535_set_pio_mode     -       set host controller for PIO mode
+ *      @hwif: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      A callback from the upper layers for PIO-only tuning.
  */
 
-static void cs5535_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void cs5535_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        cs5535_set_speed(drive, XFER_PIO_0 + pio);
+        cs5535_set_speed(drive, drive->pio_mode);
 }
 
 static u8 cs5535_cable_detect(ide_hwif_t *hwif)
diff --git a/drivers/ide/cs5536.c b/drivers/ide/cs5536.c
index 9623b852c616..b518ef0e9a35 100644
--- a/drivers/ide/cs5536.c
+++ b/drivers/ide/cs5536.c
@@ -125,11 +125,11 @@ static u8 cs5536_cable_detect(ide_hwif_t *hwif)
 
 /**
  *      cs5536_set_pio_mode             -       PIO timing setup
+ *      @hwif: ATA port
  *      @drive: ATA device
- *      @pio: PIO mode number
  */
 
-static void cs5536_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void cs5536_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         static const u8 drv_timings[5] = {
                 0x98, 0x55, 0x32, 0x21, 0x20,
@@ -143,11 +143,12 @@ static void cs5536_set_pio_mode(ide_drive_t *drive, const u8 pio)
                 0x99, 0x92, 0x90, 0x22, 0x20,
         };
 
-        struct pci_dev *pdev = to_pci_dev(drive->hwif->dev);
+        struct pci_dev *pdev = to_pci_dev(hwif->dev);
         ide_drive_t *pair = ide_get_pair_dev(drive);
         int cshift = (drive->dn & 1) ? IDE_CAST_D1_SHIFT : IDE_CAST_D0_SHIFT;
         unsigned long timings = (unsigned long)ide_get_drivedata(drive);
         u32 cast;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
         u8 cmd_pio = pio;
 
         if (pair)
diff --git a/drivers/ide/cy82c693.c b/drivers/ide/cy82c693.c
index fbf3dcc26577..ead65c394f00 100644
--- a/drivers/ide/cy82c693.c
+++ b/drivers/ide/cy82c693.c
@@ -80,9 +80,8 @@ static void cy82c693_set_dma_mode(ide_drive_t *drive, const u8 mode)
         outb(data, CY82_DATA_PORT);
 }
 
-static void cy82c693_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void cy82c693_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         struct pci_dev *dev = to_pci_dev(hwif->dev);
         int bus_speed = ide_pci_clk ? ide_pci_clk : 33;
         const unsigned long T = 1000000 / bus_speed;
@@ -101,7 +100,7 @@ static void cy82c693_set_pio_mode(ide_drive_t *drive, const u8 pio)
                 }
         }
 
-        ide_timing_compute(drive, XFER_PIO_0 + pio, &t, T, 1);
+        ide_timing_compute(drive, drive->pio_mode, &t, T, 1);
 
         time_16 = clamp_val(t.recover - 1, 0, 15) |
                   (clamp_val(t.active - 1, 0, 15) << 4);
diff --git a/drivers/ide/dtc2278.c b/drivers/ide/dtc2278.c
index c6b138122981..6929f7fce93a 100644
--- a/drivers/ide/dtc2278.c
+++ b/drivers/ide/dtc2278.c
@@ -68,11 +68,11 @@ static void sub22 (char b, char c)
 
 static DEFINE_SPINLOCK(dtc2278_lock);
 
-static void dtc2278_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void dtc2278_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         unsigned long flags;
 
-        if (pio >= 3) {
+        if (drive->pio_mode >= XFER_PIO_3) {
                 spin_lock_irqsave(&dtc2278_lock, flags);
                 /*
                  * This enables PIO mode4 (3?) on the first interface
diff --git a/drivers/ide/hpt366.c b/drivers/ide/hpt366.c
index 4d90ac2dbb1b..f1dec519a9e6 100644
--- a/drivers/ide/hpt366.c
+++ b/drivers/ide/hpt366.c
@@ -651,9 +651,9 @@ static void hpt3xx_set_mode(ide_drive_t *drive, const u8 speed)
         pci_write_config_dword(dev, itr_addr, new_itr);
 }
 
-static void hpt3xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void hpt3xx_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        hpt3xx_set_mode(drive, XFER_PIO_0 + pio);
+        hpt3xx_set_mode(drive, drive->pio_mode);
 }
 
 static void hpt3xx_maskproc(ide_drive_t *drive, int mask)
diff --git a/drivers/ide/ht6560b.c b/drivers/ide/ht6560b.c
index aafed8060e17..d81e49680c3f 100644
--- a/drivers/ide/ht6560b.c
+++ b/drivers/ide/ht6560b.c
@@ -279,9 +279,10 @@ static void ht_set_prefetch(ide_drive_t *drive, u8 state)
 #endif
 }
 
-static void ht6560b_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void ht6560b_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         unsigned long flags, config;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
         u8 timing;
         
         switch (pio) {
diff --git a/drivers/ide/ide-devsets.c b/drivers/ide/ide-devsets.c
index cb3341ce655c..c6935c78757c 100644
--- a/drivers/ide/ide-devsets.c
+++ b/drivers/ide/ide-devsets.c
@@ -112,10 +112,10 @@ static int set_pio_mode(ide_drive_t *drive, int arg)
 
                         /* take lock for IDE_DFLAG_[NO_]UNMASK/[NO_]IO_32BIT */
                         spin_lock_irqsave(&hwif->lock, flags);
-                        port_ops->set_pio_mode(drive, arg);
+                        port_ops->set_pio_mode(hwif, drive);
                         spin_unlock_irqrestore(&hwif->lock, flags);
                 } else
-                        port_ops->set_pio_mode(drive, arg);
+                        port_ops->set_pio_mode(hwif, drive);
         } else {
                 int keep_dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
 
diff --git a/drivers/ide/ide-xfer-mode.c b/drivers/ide/ide-xfer-mode.c
index c2323869d92a..a62fb03fc1cc 100644
--- a/drivers/ide/ide-xfer-mode.c
+++ b/drivers/ide/ide-xfer-mode.c
@@ -136,7 +136,7 @@ int ide_set_pio_mode(ide_drive_t *drive, const u8 mode)
          */
         if (port_ops->set_dma_mode == NULL) {
                 drive->pio_mode = mode;
-                port_ops->set_pio_mode(drive, mode - XFER_PIO_0);
+                port_ops->set_pio_mode(hwif, drive);
                 return 0;
         }
 
@@ -144,11 +144,11 @@ int ide_set_pio_mode(ide_drive_t *drive, const u8 mode)
                 if (ide_config_drive_speed(drive, mode))
                         return -1;
                 drive->pio_mode = mode;
-                port_ops->set_pio_mode(drive, mode - XFER_PIO_0);
+                port_ops->set_pio_mode(hwif, drive);
                 return 0;
         } else {
                 drive->pio_mode = mode;
-                port_ops->set_pio_mode(drive, mode - XFER_PIO_0);
+                port_ops->set_pio_mode(hwif, drive);
                 return ide_config_drive_speed(drive, mode);
         }
 }
diff --git a/drivers/ide/it8172.c b/drivers/ide/it8172.c
index 0d266a5b524d..9dfdc8741a7b 100644
--- a/drivers/ide/it8172.c
+++ b/drivers/ide/it8172.c
@@ -37,12 +37,12 @@
 
 #define DRV_NAME "IT8172"
 
-static void it8172_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void it8172_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif        = drive->hwif;
         struct pci_dev *dev     = to_pci_dev(hwif->dev);
         u16 drive_enables;
         u32 drive_timing;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         /*
          * The highest value of DIOR/DIOW pulse width and recovery time
@@ -98,14 +98,14 @@ static void it8172_set_dma_mode(ide_drive_t *drive, const u8 speed)
                 pci_write_config_byte(dev, 0x4a, reg4a | u_speed);
         } else {
                 const u8 mwdma_to_pio[] = { 0, 3, 4 };
-                u8 pio;
 
                 pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
                 pci_write_config_byte(dev, 0x4a, reg4a & ~a_speed);
 
-                pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
+                drive->pio_mode =
+                        mwdma_to_pio[speed - XFER_MW_DMA_0] + XFER_PIO_0;
 
-                it8172_set_pio_mode(drive, pio);
+                it8172_set_pio_mode(hwif, drive);
         }
 }
 
diff --git a/drivers/ide/it8213.c b/drivers/ide/it8213.c
index 47976167796a..492c07d5f4f3 100644
--- a/drivers/ide/it8213.c
+++ b/drivers/ide/it8213.c
@@ -17,15 +17,14 @@
 
 /**
  *      it8213_set_pio_mode     -       set host controller for PIO mode
+ *      @hwif: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      Set the interface PIO mode.
  */
 
-static void it8213_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void it8213_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif        = drive->hwif;
         struct pci_dev *dev     = to_pci_dev(hwif->dev);
         int is_slave            = drive->dn & 1;
         int master_port         = 0x40;
@@ -35,6 +34,7 @@ static void it8213_set_pio_mode(ide_drive_t *drive, const u8 pio)
         u8 slave_data;
         static DEFINE_SPINLOCK(tune_lock);
         int control = 0;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         static const u8 timings[][2] = {
                                         { 0, 0 },
@@ -120,7 +120,6 @@ static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
                         pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
         } else {
                 const u8 mwdma_to_pio[] = { 0, 3, 4 };
-                u8 pio;
 
                 if (reg48 & u_flag)
                         pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
@@ -132,11 +131,12 @@ static void it8213_set_dma_mode(ide_drive_t *drive, const u8 speed)
                         pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
 
                 if (speed >= XFER_MW_DMA_0)
-                        pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
+                        drive->pio_mode =
+                                mwdma_to_pio[speed - XFER_MW_DMA_0] + XFER_PIO_0;
                 else
-                        pio = 2; /* only SWDMA2 is allowed */
+                        drive->pio_mode = XFER_PIO_2; /* for SWDMA2 */
 
-                it8213_set_pio_mode(drive, pio);
+                it8213_set_pio_mode(hwif, drive);
         }
 }
 
diff --git a/drivers/ide/it821x.c b/drivers/ide/it821x.c
index 51aa745246dc..69becb7b9656 100644
--- a/drivers/ide/it821x.c
+++ b/drivers/ide/it821x.c
@@ -228,18 +228,18 @@ static void it821x_clock_strategy(ide_drive_t *drive)
 
 /**
  *      it821x_set_pio_mode     -       set host controller for PIO mode
+ *      @hwif: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      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 void it821x_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void it821x_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         struct it821x_dev *itdev = ide_get_hwifdata(hwif);
         ide_drive_t *pair = ide_get_pair_dev(drive);
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
         u8 unit = drive->dn & 1, set_pio = pio;
 
         /* Spec says 89 ref driver uses 88 */
diff --git a/drivers/ide/jmicron.c b/drivers/ide/jmicron.c
index bf2be6431b20..ebffb904ed24 100644
--- a/drivers/ide/jmicron.c
+++ b/drivers/ide/jmicron.c
@@ -80,7 +80,7 @@ static u8 jmicron_cable_detect(ide_hwif_t *hwif)
         return ATA_CBL_PATA80;
 }
 
-static void jmicron_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void jmicron_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
 }
 
diff --git a/drivers/ide/opti621.c b/drivers/ide/opti621.c
index 2052788fab7a..1a53a4c375ed 100644
--- a/drivers/ide/opti621.c
+++ b/drivers/ide/opti621.c
@@ -62,12 +62,12 @@ static u8 read_reg(int reg)
         return ret;
 }
 
-static void opti621_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void opti621_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         ide_drive_t *pair = ide_get_pair_dev(drive);
         unsigned long flags;
-        unsigned long mode = XFER_PIO_0 + pio, pair_mode;
+        unsigned long mode = drive->pio_mode, pair_mode;
+        const u8 pio = mode - XFER_PIO_0;
         u8 tim, misc, addr_pio = pio, clk;
 
         /* DRDY is default 2 (by OPTi Databook) */
diff --git a/drivers/ide/palm_bk3710.c b/drivers/ide/palm_bk3710.c
index f8eddf05ecb8..0f262d07c378 100644
--- a/drivers/ide/palm_bk3710.c
+++ b/drivers/ide/palm_bk3710.c
@@ -203,12 +203,13 @@ static void palm_bk3710_set_dma_mode(ide_drive_t *drive, u8 xferspeed)
         }
 }
 
-static void palm_bk3710_set_pio_mode(ide_drive_t *drive, u8 pio)
+static void palm_bk3710_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         unsigned int cycle_time;
         int is_slave = drive->dn & 1;
         ide_drive_t *mate;
-        void __iomem *base = (void *)drive->hwif->dma_base;
+        void __iomem *base = (void *)hwif->dma_base;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         /*
          * Obtain the drive PIO data for tuning the Palm Chip registers
diff --git a/drivers/ide/pdc202xx_new.c b/drivers/ide/pdc202xx_new.c
index 65ba8239e7b5..874acd2bb6e6 100644
--- a/drivers/ide/pdc202xx_new.c
+++ b/drivers/ide/pdc202xx_new.c
@@ -167,11 +167,11 @@ static void pdcnew_set_dma_mode(ide_drive_t *drive, const u8 speed)
         }
 }
 
-static void pdcnew_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void pdcnew_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         struct pci_dev *dev = to_pci_dev(hwif->dev);
         u8 adj = (drive->dn & 1) ? 0x08 : 0x00;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         if (max_dma_rate(dev) == 4) {
                 set_indexed_reg(hwif, 0x0c + adj, pio_timings[pio].reg0c);
diff --git a/drivers/ide/pdc202xx_old.c b/drivers/ide/pdc202xx_old.c
index 1d20594ee420..402aab7f3baa 100644
--- a/drivers/ide/pdc202xx_old.c
+++ b/drivers/ide/pdc202xx_old.c
@@ -76,9 +76,9 @@ static void pdc202xx_set_mode(ide_drive_t *drive, const u8 speed)
         }
 }
 
-static void pdc202xx_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void pdc202xx_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        pdc202xx_set_mode(drive, XFER_PIO_0 + pio);
+        pdc202xx_set_mode(drive, drive->pio_mode);
 }
 
 static int pdc202xx_test_irq(ide_hwif_t *hwif)
diff --git a/drivers/ide/piix.c b/drivers/ide/piix.c
index bf14f39bd3a7..64b3041daa60 100644
--- a/drivers/ide/piix.c
+++ b/drivers/ide/piix.c
@@ -59,15 +59,14 @@ static int no_piix_dma;
 
 /**
  *      piix_set_pio_mode       -       set host controller for PIO mode
+ *      @port: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      Set the interface PIO mode based upon the settings done by AMI BIOS.
  */
 
-static void piix_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void piix_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif        = drive->hwif;
         struct pci_dev *dev     = to_pci_dev(hwif->dev);
         int is_slave            = drive->dn & 1;
         int master_port         = hwif->channel ? 0x42 : 0x40;
@@ -77,6 +76,7 @@ static void piix_set_pio_mode(ide_drive_t *drive, const u8 pio)
         u8 slave_data;
         static DEFINE_SPINLOCK(tune_lock);
         int control = 0;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
                                      /* ISP  RTC */
         static const u8 timings[][2]= {
@@ -176,7 +176,6 @@ static void piix_set_dma_mode(ide_drive_t *drive, const u8 speed)
                         pci_write_config_byte(dev, 0x54, reg54 & ~v_flag);
         } else {
                 const u8 mwdma_to_pio[] = { 0, 3, 4 };
-                u8 pio;
 
                 if (reg48 & u_flag)
                         pci_write_config_byte(dev, 0x48, reg48 & ~u_flag);
@@ -188,11 +187,12 @@ static void piix_set_dma_mode(ide_drive_t *drive, const u8 speed)
                         pci_write_config_byte(dev, 0x55, (u8) reg55 & ~w_flag);
 
                 if (speed >= XFER_MW_DMA_0)
-                        pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
+                        drive->pio_mode =
+                                mwdma_to_pio[speed - XFER_MW_DMA_0] + XFER_PIO_0;
                 else
-                        pio = 2; /* only SWDMA2 is allowed */
+                        drive->pio_mode = XFER_PIO_2; /* for SWDMA2 */
 
-                piix_set_pio_mode(drive, pio);
+                piix_set_pio_mode(hwif, drive);
         }
 }
 
diff --git a/drivers/ide/pmac.c b/drivers/ide/pmac.c
index 7a4e788cab2f..a167968a2d42 100644
--- a/drivers/ide/pmac.c
+++ b/drivers/ide/pmac.c
@@ -496,12 +496,11 @@ static void pmac_write_devctl(ide_hwif_t *hwif, u8 ctl)
 /*
  * Old tuning functions (called on hdparm -p), sets up drive PIO timings
  */
-static void
-pmac_ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void pmac_ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         pmac_ide_hwif_t *pmif =
                 (pmac_ide_hwif_t *)dev_get_drvdata(hwif->gendev.parent);
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
         struct ide_timing *tim = ide_timing_find_mode(XFER_PIO_0 + pio);
         u32 *timings, t;
         unsigned accessTicks, recTicks;
diff --git a/drivers/ide/qd65xx.c b/drivers/ide/qd65xx.c
index 74696edc8d1d..3f0244fd8e62 100644
--- a/drivers/ide/qd65xx.c
+++ b/drivers/ide/qd65xx.c
@@ -189,15 +189,13 @@ static void qd_set_timing (ide_drive_t *drive, u8 timing)
         printk(KERN_DEBUG "%s: %#x\n", drive->name, timing);
 }
 
-static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void qd6500_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         u16 *id = drive->id;
         int active_time   = 175;
         int recovery_time = 415; /* worst case values from the dos driver */
 
-        /*
-         * FIXME: use "pio" value
-         */
+        /* FIXME: use drive->pio_mode value */
         if (!qd_find_disk_type(drive, &active_time, &recovery_time) &&
             (id[ATA_ID_OLD_PIO_MODES] & 0xff) && (id[ATA_ID_FIELD_VALID] & 2) &&
             id[ATA_ID_EIDE_PIO] >= 240) {
@@ -211,9 +209,9 @@ static void qd6500_set_pio_mode(ide_drive_t *drive, const u8 pio)
                                 active_time, recovery_time));
 }
 
-static void qd6580_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void qd6580_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
         struct ide_timing *t = ide_timing_find_mode(XFER_PIO_0 + pio);
         unsigned int cycle_time;
         int active_time   = 175;
diff --git a/drivers/ide/sc1200.c b/drivers/ide/sc1200.c
index d467478d68da..bb0166e460ab 100644
--- a/drivers/ide/sc1200.c
+++ b/drivers/ide/sc1200.c
@@ -193,10 +193,10 @@ static int sc1200_dma_end(ide_drive_t *drive)
  * will have valid default PIO timings set up before we get here.
  */
 
-static void sc1200_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void sc1200_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t      *hwif = drive->hwif;
         int             mode = -1;
+        const u8        pio = drive->pio_mode - XFER_PIO_0;
 
         /*
          * bad abuse of ->set_pio_mode interface
diff --git a/drivers/ide/scc_pata.c b/drivers/ide/scc_pata.c
index 1104bb301eb9..23e16e4460ee 100644
--- a/drivers/ide/scc_pata.c
+++ b/drivers/ide/scc_pata.c
@@ -199,16 +199,15 @@ scc_ide_outsl(unsigned long port, void *addr, u32 count)
 
 /**
  *      scc_set_pio_mode        -       set host controller for PIO mode
+ *      @hwif: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      Load the timing settings for this device mode into the
  *      controller.
  */
 
-static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void scc_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         struct scc_ports *ports = ide_get_hwifdata(hwif);
         unsigned long ctl_base = ports->ctl;
         unsigned long cckctrl_port = ctl_base + 0xff0;
@@ -216,6 +215,7 @@ static void scc_set_pio_mode(ide_drive_t *drive, const u8 pio)
         unsigned long pioct_port = ctl_base + 0x004;
         unsigned long reg;
         int offset;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         reg = in_be32((void __iomem *)cckctrl_port);
         if (reg & CCKCTRL_ATACLKOEN) {
diff --git a/drivers/ide/serverworks.c b/drivers/ide/serverworks.c
index 657f0433ec50..a56bc51ae032 100644
--- a/drivers/ide/serverworks.c
+++ b/drivers/ide/serverworks.c
@@ -106,12 +106,13 @@ static u8 svwks_csb_check (struct pci_dev *dev)
         return 0;
 }
 
-static void svwks_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void svwks_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         static const u8 pio_modes[] = { 0x5d, 0x47, 0x34, 0x22, 0x20 };
         static const u8 drive_pci[] = { 0x41, 0x40, 0x43, 0x42 };
 
-        struct pci_dev *dev = to_pci_dev(drive->hwif->dev);
+        struct pci_dev *dev = to_pci_dev(hwif->dev);
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         pci_write_config_byte(dev, drive_pci[drive->dn], pio_modes[pio]);
 
diff --git a/drivers/ide/siimage.c b/drivers/ide/siimage.c
index d95df528562f..97266958f744 100644
--- a/drivers/ide/siimage.c
+++ b/drivers/ide/siimage.c
@@ -229,19 +229,18 @@ static u8 sil_sata_udma_filter(ide_drive_t *drive)
 
 /**
  *      sil_set_pio_mode        -       set host controller for PIO mode
+ *      @hwif: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      Load the timing settings for this device mode into the
  *      controller.
  */
 
-static void sil_set_pio_mode(ide_drive_t *drive, u8 pio)
+static void sil_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         static const u16 tf_speed[]   = { 0x328a, 0x2283, 0x1281, 0x10c3, 0x10c1 };
         static const u16 data_speed[] = { 0x328a, 0x2283, 0x1104, 0x10c3, 0x10c1 };
 
-        ide_hwif_t *hwif        = drive->hwif;
         struct pci_dev *dev     = to_pci_dev(hwif->dev);
         ide_drive_t *pair       = ide_get_pair_dev(drive);
         u32 speedt              = 0;
@@ -249,6 +248,7 @@ static void sil_set_pio_mode(ide_drive_t *drive, u8 pio)
         unsigned long addr      = siimage_seldev(drive, 0x04);
         unsigned long tfaddr    = siimage_selreg(hwif,  0x02);
         unsigned long base      = (unsigned long)hwif->hwif_data;
+        const u8 pio            = drive->pio_mode - XFER_PIO_0;
         u8 tf_pio               = pio;
         u8 mmio                 = (hwif->host_flags & IDE_HFLAG_MMIO) ? 1 : 0;
         u8 addr_mask            = hwif->channel ? (mmio ? 0xF4 : 0x84)
diff --git a/drivers/ide/sis5513.c b/drivers/ide/sis5513.c
index 468706082fb5..5a0192060531 100644
--- a/drivers/ide/sis5513.c
+++ b/drivers/ide/sis5513.c
@@ -290,10 +290,10 @@ static void config_drive_art_rwp(ide_drive_t *drive)
                 pci_write_config_byte(dev, 0x4b, rw_prefetch);
 }
 
-static void sis_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void sis_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
         config_drive_art_rwp(drive);
-        sis_program_timings(drive, XFER_PIO_0 + pio);
+        sis_program_timings(drive, drive->pio_mode);
 }
 
 static void sis_ata133_program_udma_timings(ide_drive_t *drive, const u8 mode)
diff --git a/drivers/ide/sl82c105.c b/drivers/ide/sl82c105.c
index 3c2bbf0057ea..419cd3bc6c84 100644
--- a/drivers/ide/sl82c105.c
+++ b/drivers/ide/sl82c105.c
@@ -63,12 +63,13 @@ static unsigned int get_pio_timings(ide_drive_t *drive, u8 pio)
 /*
  * Configure the chipset for PIO mode.
  */
-static void sl82c105_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void sl82c105_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        struct pci_dev *dev     = to_pci_dev(drive->hwif->dev);
+        struct pci_dev *dev     = to_pci_dev(hwif->dev);
         unsigned long timings   = (unsigned long)ide_get_drivedata(drive);
         int reg                 = 0x44 + drive->dn * 4;
         u16 drv_ctrl;
+        const u8 pio            = drive->pio_mode - XFER_PIO_0;
 
         drv_ctrl = get_pio_timings(drive, pio);
 
diff --git a/drivers/ide/slc90e66.c b/drivers/ide/slc90e66.c
index 1ccfb40e7215..019777522cd2 100644
--- a/drivers/ide/slc90e66.c
+++ b/drivers/ide/slc90e66.c
@@ -18,9 +18,8 @@
 
 static DEFINE_SPINLOCK(slc90e66_lock);
 
-static void slc90e66_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void slc90e66_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif        = drive->hwif;
         struct pci_dev *dev     = to_pci_dev(hwif->dev);
         int is_slave            = drive->dn & 1;
         int master_port         = hwif->channel ? 0x42 : 0x40;
@@ -29,6 +28,8 @@ static void slc90e66_set_pio_mode(ide_drive_t *drive, const u8 pio)
         u16 master_data;
         u8 slave_data;
         int control = 0;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
+
                                      /* ISP  RTC */
         static const u8 timings[][2] = {
                                         { 0, 0 },
@@ -98,7 +99,6 @@ static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed)
                 }
         } else {
                 const u8 mwdma_to_pio[] = { 0, 3, 4 };
-                u8 pio;
 
                 if (reg48 & u_flag)
                         pci_write_config_word(dev, 0x48, reg48 & ~u_flag);
@@ -106,11 +106,12 @@ static void slc90e66_set_dma_mode(ide_drive_t *drive, const u8 speed)
                         pci_write_config_word(dev, 0x4a, reg4a & ~a_speed);
 
                 if (speed >= XFER_MW_DMA_0)
-                        pio = mwdma_to_pio[speed - XFER_MW_DMA_0];
+                        drive->pio_mode =
+                                mwdma_to_pio[speed - XFER_MW_DMA_0] + XFER_PIO_0;
                 else
-                        pio = 2; /* only SWDMA2 is allowed */
+                        drive->pio_mode = XFER_PIO_2; /* for SWDMA2 */
 
-                slc90e66_set_pio_mode(drive, pio);
+                slc90e66_set_pio_mode(hwif, drive);
         }
 }
 
diff --git a/drivers/ide/tc86c001.c b/drivers/ide/tc86c001.c
index 05a93d6baecc..f2cb62bf3f22 100644
--- a/drivers/ide/tc86c001.c
+++ b/drivers/ide/tc86c001.c
@@ -41,9 +41,9 @@ static void tc86c001_set_mode(ide_drive_t *drive, const u8 speed)
         outw(scr, scr_port);
 }
 
-static void tc86c001_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void tc86c001_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        tc86c001_set_mode(drive, XFER_PIO_0 + pio);
+        tc86c001_set_mode(drive, drive->pio_mode);
 }
 
 /*
diff --git a/drivers/ide/triflex.c b/drivers/ide/triflex.c
index 8773c3ba7462..d34a7eecdea5 100644
--- a/drivers/ide/triflex.c
+++ b/drivers/ide/triflex.c
@@ -82,9 +82,9 @@ static void triflex_set_mode(ide_drive_t *drive, const u8 speed)
         pci_write_config_dword(dev, channel_offset, triflex_timings);
 }
 
-static void triflex_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void triflex_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        triflex_set_mode(drive, XFER_PIO_0 + pio);
+        triflex_set_mode(drive, drive->pio_mode);
 }
 
 static const struct ide_port_ops triflex_port_ops = {
diff --git a/drivers/ide/tx4938ide.c b/drivers/ide/tx4938ide.c
index fd59c0d235b5..326d4683488b 100644
--- a/drivers/ide/tx4938ide.c
+++ b/drivers/ide/tx4938ide.c
@@ -56,11 +56,10 @@ static void tx4938ide_tune_ebusc(unsigned int ebus_ch,
                      &tx4938_ebuscptr->cr[ebus_ch]);
 }
 
-static void tx4938ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void tx4938ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         struct tx4938ide_platform_info *pdata = hwif->dev->platform_data;
-        u8 safe = pio;
+        u8 safe = drive->pio_mode - XFER_PIO_0;
         ide_drive_t *pair;
 
         pair = ide_get_pair_dev(drive);
diff --git a/drivers/ide/tx4939ide.c b/drivers/ide/tx4939ide.c
index 64b58ecc3f0e..5228a4786de5 100644
--- a/drivers/ide/tx4939ide.c
+++ b/drivers/ide/tx4939ide.c
@@ -104,11 +104,11 @@ static void tx4939ide_writeb(u8 val, void __iomem *base, u32 reg)
 
 #define TX4939IDE_BASE(hwif)    ((void __iomem *)(hwif)->extra_base)
 
-static void tx4939ide_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void tx4939ide_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif;
         int is_slave = drive->dn;
         u32 mask, val;
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
         u8 safe = pio;
         ide_drive_t *pair;
 
diff --git a/drivers/ide/umc8672.c b/drivers/ide/umc8672.c
index 60f936e2319c..47adcd09cb26 100644
--- a/drivers/ide/umc8672.c
+++ b/drivers/ide/umc8672.c
@@ -104,10 +104,11 @@ static void umc_set_speeds(u8 speeds[])
                 speeds[0], speeds[1], speeds[2], speeds[3]);
 }
 
-static void umc_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void umc_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        ide_hwif_t *hwif = drive->hwif, *mate = hwif->mate;
+        ide_hwif_t *mate = hwif->mate;
         unsigned long uninitialized_var(flags);
+        const u8 pio = drive->pio_mode - XFER_PIO_0;
 
         printk("%s: setting umc8672 to PIO mode%d (speed %d)\n",
                 drive->name, pio, pio_to_umc[pio]);
diff --git a/drivers/ide/via82cxxx.c b/drivers/ide/via82cxxx.c
index fbecf8ea8207..6d995fc9d4f5 100644
--- a/drivers/ide/via82cxxx.c
+++ b/drivers/ide/via82cxxx.c
@@ -208,15 +208,15 @@ static void via_set_drive(ide_drive_t *drive, const u8 speed)
 
 /**
  *      via_set_pio_mode        -       set host controller for PIO mode
+ *      @hwif: port
  *      @drive: drive
- *      @pio: PIO mode number
  *
  *      A callback from the upper layers for PIO-only tuning.
  */
 
-static void via_set_pio_mode(ide_drive_t *drive, const u8 pio)
+static void via_set_pio_mode(ide_hwif_t *hwif, ide_drive_t *drive)
 {
-        via_set_drive(drive, XFER_PIO_0 + pio);
+        via_set_drive(drive, drive->pio_mode);
 }
 
 static struct via_isa_bridge *via_config_find(struct pci_dev **isa)