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tx4939ide: remove wmb() 

* define CHECK_DMA_MASK
* remove use of wmb()

Reported-by: Grant Grundler <grundler@google.com>
Reviewed-by: Grant Grundler <grundler@google.com>
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
This commit is contained in:
Atsushi Nemoto 2009-04-08 14:12:49 +02:00 committed by Bartlomiej Zolnierkiewicz
parent edafcf73dc
commit 253275c52c
1 changed files with 3 additions and 3 deletions
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6
drivers/ide/tx4939ide.c
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@ -327,15 +327,15 @@ static int tx4939ide_dma_end(ide_drive_t *drive)
/* read and clear the INTR & ERROR bits */
dma_stat = tx4939ide_clear_dma_status(base);
wmb();
#define CHECK_DMA_MASK (ATA_DMA_ACTIVE | ATA_DMA_ERR | ATA_DMA_INTR)
/* verify good DMA status */
if ((dma_stat & (ATA_DMA_INTR | ATA_DMA_ERR | ATA_DMA_ACTIVE)) == 0 &&
if ((dma_stat & CHECK_DMA_MASK) == 0 &&
(ctl & (TX4939IDE_INT_XFEREND | TX4939IDE_INT_HOST)) ==
(TX4939IDE_INT_XFEREND | TX4939IDE_INT_HOST))
/* INT_IDE lost... bug? */
return 0;
return ((dma_stat & (ATA_DMA_INTR | ATA_DMA_ERR | ATA_DMA_ACTIVE)) !=
return ((dma_stat & CHECK_DMA_MASK) !=
ATA_DMA_INTR) ? 0x10 | dma_stat : 0;
}