Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3649c06e66ad3589374e8765ed69eda65658735c
Commit: 3649c06e66ad3589374e8765ed69eda65658735c
Parent: 4728d546d7137ad5350cc2e53d4748fd26f61a60
Author: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
AuthorDate: Wed May 16 00:51:46 2007 +0200
Committer: Bartlomiej Zolnierkiewicz <[EMAIL PROTECTED]>
CommitDate: Wed May 16 00:51:46 2007 +0200
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 <[EMAIL PROTECTED]>
---
drivers/ide/ide-dma.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/ide/ide-dma.c b/drivers/ide/ide-dma.c
index de33e6f..ada2a3e 100644
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -731,10 +731,12 @@ static unsigned int ide_get_mode_mask(ide_drive_t *drive,
u8 base)
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();
-
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