ide: add ide_tune_dma() helper

[mirror_ubuntu-artful-kernel.git] / drivers / ide / pci / atiixp.c

diff --git a/drivers/ide/pci/atiixp.c b/drivers/ide/pci/atiixp.c
index 2d48af32e3f455dc7a67eed2e84418e4b6ae1234..0e52ad722a72ab23bf7e399a210fa87052f8dddb 100644 (file)
--- a/drivers/ide/pci/atiixp.c
+++ b/drivers/ide/pci/atiixp.c
@@ -48,22 +48,6 @@ static int save_mdma_mode[4];
 
 static DEFINE_SPINLOCK(atiixp_lock);
 
-/**
- *     atiixp_ratemask         -       compute rate mask for ATIIXP IDE
- *     @drive: IDE drive to compute for
- *
- *     Returns the available modes for the ATIIXP IDE controller.
- */
-
-static u8 atiixp_ratemask(ide_drive_t *drive)
-{
-       u8 mode = 3;
-
-       if (!eighty_ninty_three(drive))
-               mode = min(mode, (u8)1);
-       return mode;
-}
-
 /**
  *     atiixp_dma_2_pio                -       return the PIO mode matching DMA
  *     @xfer_rate: transfer speed
@@ -189,7 +173,7 @@ static int atiixp_speedproc(ide_drive_t *drive, u8 xferspeed)
        u16 tmp16;
        u8 speed, pio;
 
-       speed = ide_rate_filter(atiixp_ratemask(drive), xferspeed);
+       speed = ide_rate_filter(drive, xferspeed);
 
        spin_lock_irqsave(&atiixp_lock, flags);
 
@@ -222,26 +206,6 @@ static int atiixp_speedproc(ide_drive_t *drive, u8 xferspeed)
        return ide_config_drive_speed(drive, speed);
 }
 
-/**
- *     atiixp_config_drive_for_dma     -       configure drive for DMA
- *     @drive: IDE drive to configure
- *
- *     Set up a ATIIXP interface channel for the best available speed.
- *     We prefer UDMA if it is available and then MWDMA. If DMA is
- *     not available we switch to PIO and return 0.
- */
-
-static int atiixp_config_drive_for_dma(ide_drive_t *drive)
-{
-       u8 speed = ide_dma_speed(drive, atiixp_ratemask(drive));
-
-       if (!speed)
-               return 0;
-
-       (void) atiixp_speedproc(drive, speed);
-       return ide_dma_enable(drive);
-}
-
 /**
  *     atiixp_dma_check        -       set up an IDE device
  *     @drive: IDE drive to configure
@@ -256,7 +220,7 @@ static int atiixp_dma_check(ide_drive_t *drive)
 
        drive->init_speed = 0;
 
-       if (ide_use_dma(drive) && atiixp_config_drive_for_dma(drive))
+       if (ide_tune_dma(drive))
                return 0;
 
        if (ide_use_fast_pio(drive)) {