dmaengine: k3dma: Off by one in k3_of_dma_simple_xlate()

[ 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>

diff --git a/drivers/dma/k3dma.c b/drivers/dma/k3dma.c
index a1f911aaf220e0b107c1009a74edfaca1ff06634..a95f46c2a98444da30ec2c2217f88953aed7108f 100644 (file)
--- a/drivers/dma/k3dma.c
+++ b/drivers/dma/k3dma.c
@@ -652,7 +652,7 @@ static struct dma_chan *k3_of_dma_simple_xlate(struct of_phandle_args *dma_spec,
        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));