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fsldma: fix check on potential fdev->chan[] overflow

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Fix the check of potential array overflow when using corrupted channel
device tree nodes.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Li Yang <leoli@freescale.com>
This commit is contained in:
Roel Kluin 2009-05-22 16:46:52 +08:00 committed by Li Yang
parent 0899d6349c
commit f47edc6dab
1 changed files with 1 additions and 1 deletions
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2
drivers/dma/fsldma.c
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@ -830,7 +830,7 @@ static int __devinit fsl_dma_chan_probe(struct fsl_dma_device *fdev,
new_fsl_chan->reg.end - new_fsl_chan->reg.start + 1);
new_fsl_chan->id = ((new_fsl_chan->reg.start - 0x100) & 0xfff) >> 7;
if (new_fsl_chan->id > FSL_DMA_MAX_CHANS_PER_DEVICE) {
if (new_fsl_chan->id >= FSL_DMA_MAX_CHANS_PER_DEVICE) {
dev_err(fdev->dev, "There is no %d channel!\n",
new_fsl_chan->id);
err = -EINVAL;