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ide: take ide_lock for prefetch disable/enable in do_special()

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Take ide_lock for prefetch disable/enable in do_special(),
then cleanup cmd640 and ht6560b host drivers.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2007-10-20 00:32:36 +02:00
parent 69e88d2a75
commit d393aa0326
3 changed files with 14 additions and 12 deletions
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15
drivers/ide/ide-io.c
View File

@ -800,7 +800,20 @@ static ide_startstop_t do_special (ide_drive_t *drive)
s->b.set_tune = 0;
if (set_pio_mode_abuse(drive->hwif, req_pio)) {
if (hwif->set_pio_mode)
if (hwif->set_pio_mode == NULL)
return ide_stopped;
/*
* take ide_lock for drive->[no_]unmask/[no_]io_32bit
*/
if (req_pio == 8 || req_pio == 9) {
unsigned long flags;
spin_lock_irqsave(&ide_lock, flags);
hwif->set_pio_mode(drive, req_pio);
spin_unlock_irqrestore(&ide_lock, flags);
} else
hwif->set_pio_mode(drive, req_pio);
} else {
int keep_dma = drive->using_dma;

5
drivers/ide/legacy/ht6560b.c
View File

@ -286,12 +286,7 @@ static void ht6560b_set_pio_mode(ide_drive_t *drive, const u8 pio)
switch (pio) {
case 8: /* set prefetch off */
case 9: /* set prefetch on */
/*
* take ide_lock for drive->[no_]unmask
*/
spin_lock_irqsave(&ide_lock, flags);
ht_set_prefetch(drive, pio & 1);
spin_unlock_irqrestore(&ide_lock, flags);
return;
}

6
drivers/ide/pci/cmd640.c
View File

@ -632,7 +632,6 @@ static void cmd640_set_mode (unsigned int index, u8 pio_mode, unsigned int cycle
static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio)
{
unsigned long flags;
unsigned int index = 0, cycle_time;
u8 b;
@ -655,12 +654,7 @@ static void cmd640_set_pio_mode(ide_drive_t *drive, const u8 pio)
case 8: /* set prefetch off */
case 9: /* set prefetch on */
/*
* take ide_lock for drive->[no_]unmask/[no_]io_32bit
*/
spin_lock_irqsave(&ide_lock, flags);
set_prefetch_mode(index, pio & 1);
spin_unlock_irqrestore(&ide_lock, flags);
printk("%s: %sabled cmd640 prefetch\n", drive->name, (pio & 1) ? "en" : "dis");
return;
}