[PATCH] pdc202xx_new: fix PIO mode setup

Fix pdcnew_tune_drive() to always set the PIO mode requested, not pick the
best possible one, change pdcnew_config_drive_xfer_rate() accordingly, and
get rid of the duplicate tuneproc() call in config_chipset_for_dma().

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/ide/pci/pdc202xx_new.c b/drivers/ide/pci/pdc202xx_new.c
index 0592dc0..3ca5810 100644 (file)
--- a/drivers/ide/pci/pdc202xx_new.c
+++ b/drivers/ide/pci/pdc202xx_new.c
@@ -9,6 +9,7 @@
  *  Split from:
  *  linux/drivers/ide/pdc202xx.c       Version 0.35    Mar. 30, 2002
  *  Copyright (C) 1998-2002            Andre Hedrick <andre@linux-ide.org>
+ *  Copyright (C) 2005-2006            MontaVista Software, Inc.
  *  Portions Copyright (C) 1999 Promise Technology, Inc.
  *  Author: Frank Tiernan (frankt@promise.com)
  *  Released under terms of General Public License
@@ -168,12 +169,8 @@ static int pdcnew_new_tune_chipset (ide_drive_t *drive, u8 xferspeed)
  */
 static void pdcnew_tune_drive(ide_drive_t *drive, u8 pio)
 {
-       u8 speed;
-
-       if (pio == 5) pio = 4;
-       speed = XFER_PIO_0 + ide_get_best_pio_mode(drive, 255, pio, NULL);
-
-       (void)pdcnew_new_tune_chipset(drive, speed);
+       pio = ide_get_best_pio_mode(drive, pio, 4, NULL);
+       (void)pdcnew_new_tune_chipset(drive, XFER_PIO_0 + pio);
 }
 
 static u8 pdcnew_new_cable_detect (ide_hwif_t *hwif)
@@ -207,10 +204,8 @@ static int config_chipset_for_dma (ide_drive_t *drive)
 
        speed = ide_dma_speed(drive, pdcnew_ratemask(drive));
 
-       if (!(speed)) {
-               hwif->tuneproc(drive, 5);
+       if (!speed)
                return 0;
-       }
 
        (void) hwif->speedproc(drive, speed);
        return ide_dma_enable(drive);
@@ -234,7 +229,7 @@ static int pdcnew_config_drive_xfer_rate (ide_drive_t *drive)
 
        } else if ((id->capability & 8) || (id->field_valid & 2)) {
 fast_ata_pio:
-               hwif->tuneproc(drive, 5);
+               hwif->tuneproc(drive, 255);
                return hwif->ide_dma_off_quietly(drive);
        }
        /* IORDY not supported */