| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.14 106/217] dmaengine: k3dma: Off by one in k3_of_dma_simple_xlate() | Date | Thu, 23 Aug 2018 09:53:39 +0200 |
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4.14-stable review patch. If anyone has any objections, please let me know.
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From: Dan Carpenter <dan.carpenter@oracle.com>
[ Upstream commit c4c2b7644cc9a41f17a8cc8904efe3f66ae4c7ed ]
The d->chans[] array has d->dma_requests elements so the > should be >= here.
Fixes: 8e6152bc660e ("dmaengine: Add hisilicon k3 DMA engine driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <alexander.levin@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/dma/k3dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/dma/k3dma.c +++ b/drivers/dma/k3dma.c @@ -787,7 +787,7 @@ static struct dma_chan *k3_of_dma_simple struct k3_dma_dev *d = ofdma->of_dma_data; unsigned int request = dma_spec->args[0]; - if (request > d->dma_requests) + if (request >= d->dma_requests) return NULL; return dma_get_slave_channel(&(d->chans[request].vc.chan));
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