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Date: Mon, 12 Jun 2017 17:25:14 +0200 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>, Vinod Koul <vinod.koul@...el.com> Subject: [PATCH 4.9 052/119] dmaengine: mv_xor_v2: set DMA mask to 40 bits 4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com> commit b2d3c270f9f2fb82518ac500a9849c3aaf503852 upstream. The XORv2 engine on Armada 7K/8K can only access the first 40 bits of the physical address space, so the DMA mask must be set accordingly. Fixes: 19a340b1a820 ("dmaengine: mv_xor_v2: new driver") Signed-off-by: Thomas Petazzoni <thomas.petazzoni@...e-electrons.com> Signed-off-by: Vinod Koul <vinod.koul@...el.com> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/dma/mv_xor_v2.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/dma/mv_xor_v2.c +++ b/drivers/dma/mv_xor_v2.c @@ -693,6 +693,10 @@ static int mv_xor_v2_probe(struct platfo platform_set_drvdata(pdev, xor_dev); + ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(40)); + if (ret) + return ret; + xor_dev->clk = devm_clk_get(&pdev->dev, NULL); if (IS_ERR(xor_dev->clk) && PTR_ERR(xor_dev->clk) == -EPROBE_DEFER) return -EPROBE_DEFER;
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