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authorGrant Grundler <grundler@google.com>2009-04-08 16:12:49 +0400
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2009-04-08 16:12:49 +0400
commitedafcf73dca2f9531c78eec130df84a8c9654b3b (patch)
tree71f01d37becfe14c2f26f9cee2ea5f6af03112e0 /drivers/ide/ide-dma-sff.c
parentd18812070efc658267f7573eec5ce7810128bfeb (diff)
downloadlinux-edafcf73dca2f9531c78eec130df84a8c9654b3b.tar.xz
ide: remove wmb() from ide-dma-sff.c and scc_pata.c
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>
Diffstat (limited to 'drivers/ide/ide-dma-sff.c')
-rw-r--r--drivers/ide/ide-dma-sff.c9
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/ide/ide-dma-sff.c b/drivers/ide/ide-dma-sff.c
index 16fc46edc32d..e4cdf78cc3e9 100644
--- a/drivers/ide/ide-dma-sff.c
+++ b/drivers/ide/ide-dma-sff.c
@@ -277,8 +277,6 @@ void ide_dma_start(ide_drive_t *drive)
dma_cmd = inb(hwif->dma_base + ATA_DMA_CMD);
outb(dma_cmd | ATA_DMA_START, hwif->dma_base + ATA_DMA_CMD);
}
-
- wmb();
}
EXPORT_SYMBOL_GPL(ide_dma_start);
@@ -286,7 +284,7 @@ EXPORT_SYMBOL_GPL(ide_dma_start);
int ide_dma_end(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
- u8 dma_stat = 0, dma_cmd = 0, mask;
+ u8 dma_stat = 0, dma_cmd = 0;
/* stop DMA */
if (hwif->host_flags & IDE_HFLAG_MMIO) {
@@ -304,11 +302,10 @@ int ide_dma_end(ide_drive_t *drive)
/* clear INTR & ERROR bits */
ide_dma_sff_write_status(hwif, dma_stat | ATA_DMA_ERR | ATA_DMA_INTR);
- wmb();
+#define CHECK_DMA_MASK (ATA_DMA_ACTIVE | ATA_DMA_ERR | ATA_DMA_INTR)
/* verify good DMA status */
- mask = ATA_DMA_ACTIVE | ATA_DMA_ERR | ATA_DMA_INTR;
- if ((dma_stat & mask) != ATA_DMA_INTR)
+ if ((dma_stat & CHECK_DMA_MASK) != ATA_DMA_INTR)
return 0x10 | dma_stat;
return 0;
}