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ide: remove wmb() from ide-dma-sff.c and scc_pata.c

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This patch:
o replaces "mask" variable in ide_dma_end() with #define.
o removes use of wmb() in ide-dma-sff.c and scc_pata.c.
o is not tested - I don't have (or want) the HW.

Signed-off-by: Grant Grundler <grundler@google.com>
Cc: KOBAYASHI Yoshitake <yoshitake.kobayashi@toshiba.co.jp>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Grant Grundler
2009-04-08 14:12:49 +02:00
committed by Bartlomiej Zolnierkiewicz
parent d18812070e
commit edafcf73dc
2 changed files with 3 additions and 8 deletions
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2
drivers/ide/scc_pata.c
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@@ -337,7 +337,6 @@ static void scc_dma_start(ide_drive_t *drive)
/* start DMA */
scc_ide_outb(dma_cmd | 1, hwif->dma_base);
wmb();
}
static int __scc_dma_end(ide_drive_t *drive)
@@ -354,7 +353,6 @@ static int __scc_dma_end(ide_drive_t *drive)
/* clear the INTR & ERROR bits */
scc_ide_outb(dma_stat | 6, hwif->dma_base + 4);
/* verify good DMA status */
wmb();
return (dma_stat & 7) != 4 ? (0x10 | dma_stat) : 0;
}