[PATCH] ide: add missing validity checks for identify words 62 and 63 Check validity of identify words 62 and 63 before using them in ide_get_mode_mask(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx> --- drivers/ide/ide-dma.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) Index: b/drivers/ide/ide-dma.c =================================================================== --- a/drivers/ide/ide-dma.c +++ b/drivers/ide/ide-dma.c @@ -731,10 +731,12 @@ static unsigned int ide_get_mode_mask(id mask &= 0x07; break; case XFER_MW_DMA_0: - mask = id->dma_mword & hwif->mwdma_mask; + if (id->field_valid & 2) + mask = id->dma_mword & hwif->mwdma_mask; break; case XFER_SW_DMA_0: - mask = id->dma_1word & hwif->swdma_mask; + if (id->field_valid & 2) + mask = id->dma_1word & hwif->swdma_mask; break; default: BUG(); - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
