ide: remove ide_use_fast_pio()

Remove ide_use_fast_pio() and just re-tune PIO unconditionally if DMA tuning
has failed in ->ide_dma_check.  All host drivers using ide_use_fast_pio() set
drive->autotune so PIO is always tuned anyway and in some cases we _really_
need to re-tune PIO because PIO and DMA timings are shared.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

16 files changed, 15 insertions, 45 deletions

diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index 0e2562f..af86433 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -96,21 +96,6 @@ static u8 ide_rate_filter(ide_drive_t *drive, u8 speed)
 	return min(speed, mode);
 }
 
-int ide_use_fast_pio(ide_drive_t *drive)
-{
-	struct hd_driveid *id = drive->id;
-
-	if ((id->capability & 1) && drive->autodma)
-		return 1;
-
-	if ((id->capability & 8) || (id->field_valid & 2))
-		return 1;
-
-	return 0;
-}
-
-EXPORT_SYMBOL_GPL(ide_use_fast_pio);
-
 /*
  * Standard (generic) timings for PIO modes, from ATA2 specification.
  * These timings are for access to the IDE data port register *only*.
diff --git a/drivers/ide/pci/aec62xx.c b/drivers/ide/pci/aec62xx.c
index 2e82ef5..91bf5be 100644
--- a/drivers/ide/pci/aec62xx.c
+++ b/drivers/ide/pci/aec62xx.c
@@ -146,8 +146,7 @@ static int aec62xx_config_drive_xfer_rate (ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index 644f4ae..b457df8 100644
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -171,8 +171,7 @@ static int atiixp_dma_check(ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/cmd64x.c b/drivers/ide/pci/cmd64x.c
index d50f15e..52790cb 100644
--- a/drivers/ide/pci/cmd64x.c
+++ b/drivers/ide/pci/cmd64x.c
@@ -335,8 +335,7 @@ static int cmd64x_config_drive_for_dma (ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/cs5535.c b/drivers/ide/pci/cs5535.c
index 896cc92..2a72b4f 100644
--- a/drivers/ide/pci/cs5535.c
+++ b/drivers/ide/pci/cs5535.c
@@ -162,8 +162,7 @@ static int cs5535_dma_check(ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/hpt34x.c b/drivers/ide/pci/hpt34x.c
index bccf066..6972488 100644
--- a/drivers/ide/pci/hpt34x.c
+++ b/drivers/ide/pci/hpt34x.c
@@ -85,8 +85,7 @@ static int hpt34x_config_drive_xfer_rate (ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return -1;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index a8097b5..992b60e 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -718,8 +718,7 @@ static int hpt366_config_drive_xfer_rate(ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index c3a7512..9767232 100644
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -228,8 +228,7 @@ static int pdcnew_config_drive_xfer_rate(ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/pdc202xx_old.c b/drivers/ide/pci/pdc202xx_old.c
index 9847a4f..b2c7b6e 100644
--- a/drivers/ide/pci/pdc202xx_old.c
+++ b/drivers/ide/pci/pdc202xx_old.c
@@ -184,8 +184,7 @@ static int pdc202xx_config_drive_xfer_rate (ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/piix.c b/drivers/ide/pci/piix.c
index 4dd1b6d..dcb0701f 100644
--- a/drivers/ide/pci/piix.c
+++ b/drivers/ide/pci/piix.c
@@ -267,8 +267,7 @@ static int piix_config_drive_xfer_rate (ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index 67f06dd..f839bde 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -299,8 +299,7 @@ static int scc_config_drive_for_dma(ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/serverworks.c b/drivers/ide/pci/serverworks.c
index b7076f4..4666e4c 100644
--- a/drivers/ide/pci/serverworks.c
+++ b/drivers/ide/pci/serverworks.c
@@ -201,8 +201,7 @@ static int svwks_config_drive_xfer_rate (ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index ce77849..8be36f3 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -326,8 +326,7 @@ static int siimage_config_drive_for_dma (ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/sis5513.c b/drivers/ide/pci/sis5513.c
index 99fe0b6..5458c56 100644
--- a/drivers/ide/pci/sis5513.c
+++ b/drivers/ide/pci/sis5513.c
@@ -606,8 +606,7 @@ static int sis5513_config_xfer_rate(ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/slc90e66.c b/drivers/ide/pci/slc90e66.c
index 38da065..41c5c57 100644
--- a/drivers/ide/pci/slc90e66.c
+++ b/drivers/ide/pci/slc90e66.c
@@ -135,8 +135,7 @@ static int slc90e66_config_drive_xfer_rate (ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c
index 840415d..e66e788 100644
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -167,8 +167,7 @@ static int tc86c001_config_drive_xfer_rate(ide_drive_t *drive)
 	if (ide_tune_dma(drive))
 		return 0;
 
-	if (ide_use_fast_pio(drive))
-		ide_set_max_pio(drive);
+	ide_set_max_pio(drive);
 
 	return -1;
 }