From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
To: linux-ide@vger.kernel.org
Subject: [PATCH 12/13] ide: add missing validity checks for identify words 62 and 63
Date: Sat, 10 Mar 2007 22:11:28 +0100 [thread overview]
Message-ID: <200703102211.28887.bzolnier@gmail.com> (raw)
[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@gmail.com>
---
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();
reply other threads:[~2007-03-10 21:09 UTC|newest]
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