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pdc202xx_old: fix resetproc() method 

pdc202xx_reset() calls pdc202xx_reset_host() twice, for both channels, while
that function actually twiddles the single, shared software reset bit -- the
net effect is a duplicated reset and horrendous 4 second delay happening not
only on a channel reset but also when dma_lost_irq() and dma_clear() methods
are called.  Fold pdc202xx_reset_host() into pdc202xx_reset(), fix printk(),
and move it before the actual reset...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Sergei Shtylyov 2009-06-07 13:52:50 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 521a415c9f
commit 669165daad
1 changed files with 5 additions and 14 deletions
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19
drivers/ide/pdc202xx_old.c
View File

@ -1,6 +1,6 @@
/*
* Copyright (C) 1998-2002 Andre Hedrick <andre@linux-ide.org>
* Copyright (C) 2006-2007 MontaVista Software, Inc.
* Copyright (C) 2006-2007, 2009 MontaVista Software, Inc.
* Copyright (C) 2007 Bartlomiej Zolnierkiewicz
*
* Portions Copyright (C) 1999 Promise Technology, Inc.
@ -227,28 +227,19 @@ somebody_else:
return (dma_stat & 4) == 4; /* return 1 if INTR asserted */
}
static void pdc202xx_reset_host (ide_hwif_t *hwif)
static void pdc202xx_reset(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
unsigned long high_16 = hwif->extra_base - 16;
u8 udma_speed_flag = inb(high_16 | 0x001f);
printk(KERN_WARNING "PDC202xx: software reset...\n");
outb(udma_speed_flag | 0x10, high_16 | 0x001f);
mdelay(100);
outb(udma_speed_flag & ~0x10, high_16 | 0x001f);
mdelay(2000); /* 2 seconds ?! */
printk(KERN_WARNING "PDC202XX: %s channel reset.\n",
hwif->channel ? "Secondary" : "Primary");
}
static void pdc202xx_reset (ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
ide_hwif_t *mate = hwif->mate;
pdc202xx_reset_host(hwif);
pdc202xx_reset_host(mate);
ide_set_max_pio(drive);
}