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ide: add ->dma_clear method and remove ->dma_timeout one

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All custom ->dma_timeout implementations call the generic one thus it is
possible to have only an optional method for resetting DMA engine instead:

* Add ->dma_clear method and convert hpt366, pdc202xx_old and sl82c105
  host drivers to use it.

* Always use ide_dma_timeout() in ide_dma_timeout_retry() and remove
 ->dma_timeout method.

* Make ide_dma_timeout() static.

There should be no functional changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz
2009-03-31 20:15:19 +02:00
parent e698ea83a8
commit 35c9b4daf4
21 changed files with 16 additions and 47 deletions
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drivers/ide/ide-dma.c
+6 -4
View File
@@ -460,7 +460,7 @@ void ide_dma_lost_irq(ide_drive_t *drive)
}
EXPORT_SYMBOL_GPL(ide_dma_lost_irq);
void ide_dma_timeout(ide_drive_t *drive)
static void ide_dma_timeout(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
@@ -473,7 +473,6 @@ void ide_dma_timeout(ide_drive_t *drive)
hwif->dma_ops->dma_end(drive);
}
EXPORT_SYMBOL_GPL(ide_dma_timeout);
/*
* un-busy the port etc, and clear any pending DMA status. we want to
@@ -483,6 +482,7 @@ EXPORT_SYMBOL_GPL(ide_dma_timeout);
ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error)
{
ide_hwif_t *hwif = drive->hwif;
const struct ide_dma_ops *dma_ops = hwif->dma_ops;
struct request *rq;
ide_startstop_t ret = ide_stopped;
@@ -492,12 +492,14 @@ ide_startstop_t ide_dma_timeout_retry(ide_drive_t *drive, int error)
if (error < 0) {
printk(KERN_WARNING "%s: DMA timeout error\n", drive->name);
(void)hwif->dma_ops->dma_end(drive);
(void)dma_ops->dma_end(drive);
ret = ide_error(drive, "dma timeout error",
hwif->tp_ops->read_status(hwif));
} else {
printk(KERN_WARNING "%s: DMA timeout retry\n", drive->name);
hwif->dma_ops->dma_timeout(drive);
if (dma_ops->dma_clear)
dma_ops->dma_clear(drive);
ide_dma_timeout(drive);
}
/*