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pmac: remove needless pmac_ide_destroy_dmatable() wrapper 

hwif->sg_nents is always != 0 when this function is called
and there is also no need to explicitely zero hwif->sg_nents.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-10-13 21:39:45 +02:00
parent 9055ba3ee2
commit f5e0b5ecb3
1 changed files with 3 additions and 13 deletions
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16
drivers/ide/ppc/pmac.c
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@ -1523,18 +1523,6 @@ use_pio_instead:
return 0; /* revert to PIO for this request */ return 0; /* revert to PIO for this request */
} }
/* Teardown mappings after DMA has completed. */
static void
pmac_ide_destroy_dmatable (ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
if (hwif->sg_nents) {
ide_destroy_dmatable(drive);
hwif->sg_nents = 0;
}
}
/* /*
* Prepare a DMA transfer. We build the DMA table, adjust the timings for * Prepare a DMA transfer. We build the DMA table, adjust the timings for
* a read on KeyLargo ATA/66 and mark us as waiting for DMA completion * a read on KeyLargo ATA/66 and mark us as waiting for DMA completion
@ -1606,7 +1594,9 @@ pmac_ide_dma_end (ide_drive_t *drive)
drive->waiting_for_dma = 0; drive->waiting_for_dma = 0;
dstat = readl(&dma->status); dstat = readl(&dma->status);
writel(((RUN|WAKE|DEAD) << 16), &dma->control); writel(((RUN|WAKE|DEAD) << 16), &dma->control);
pmac_ide_destroy_dmatable(drive);
ide_destroy_dmatable(drive);
/* verify good dma status. we don't check for ACTIVE beeing 0. We should... /* verify good dma status. we don't check for ACTIVE beeing 0. We should...
* in theory, but with ATAPI decices doing buffer underruns, that would * in theory, but with ATAPI decices doing buffer underruns, that would
* cause us to disable DMA, which isn't what we want * cause us to disable DMA, which isn't what we want