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| author | Ramax Lo <ramaxlo@gmail.com> | 2009-12-08 23:42:41 +0800 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2009-12-08 23:09:05 +0000 |
| commit | 947a2462792a89b8aa168a1108288e0d0ae36d12 (patch) | |
| tree | 7f81e692fad20b9a2de0cd759dcb750da9e9cc65 /arch | |
| parent | 93b0d8c6b67b7d337509a36dbfcdb6d6eac1ef12 (diff) | |
| download | linux-exynos-947a2462792a89b8aa168a1108288e0d0ae36d12.tar.gz linux-exynos-947a2462792a89b8aa168a1108288e0d0ae36d12.tar.bz2 linux-exynos-947a2462792a89b8aa168a1108288e0d0ae36d12.zip | |
ARM: S3C24XX: DMA: Use valid index when accessing array
The DMA_CH_VALID bit used in the channel index should be masked out before
using it to access the channel array.
Signed-off-by: Ramax Lo <ramaxlo@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/plat-s3c24xx/dma.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/plat-s3c24xx/dma.c b/arch/arm/plat-s3c24xx/dma.c index f65192d5b1d7..f0ea7943ac5a 100644 --- a/arch/arm/plat-s3c24xx/dma.c +++ b/arch/arm/plat-s3c24xx/dma.c @@ -1403,11 +1403,13 @@ static struct s3c2410_dma_chan *s3c2410_dma_map_channel(int channel) ord = &dma_order->channels[channel]; for (ch = 0; ch < dma_channels; ch++) { + int tmp; if (!is_channel_valid(ord->list[ch])) continue; - if (s3c2410_chans[ord->list[ch]].in_use == 0) { - ch = ord->list[ch] & ~DMA_CH_VALID; + tmp = ord->list[ch] & ~DMA_CH_VALID; + if (s3c2410_chans[tmp].in_use == 0) { + ch = tmp; goto found; } } |