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dmaengine: rcar-dmac: Allocate hardware descriptors with DMAC device

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When wired to an IOMMU to access data, the DMAC accesses the hardware
descriptors through the IOMMU as well. We're using the DMA mapping API
to allocate the descriptors, but with a NULL device at the moment, which
prevents IOMMU mappings from being created. Fix this by passing the DMAC
device instead.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Laurent Pinchart 2015-01-27 15:58:53 +02:00 committed by Vinod Koul
parent f7638c904b
commit 6a634808e3
1 changed files with 4 additions and 4 deletions
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8
drivers/dma/sh/rcar-dmac.c
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@ -655,8 +655,8 @@ static void rcar_dmac_realloc_hwdesc(struct rcar_dmac_chan *chan,
return;
if (desc->hwdescs.mem) {
dma_free_coherent(NULL, desc->hwdescs.size, desc->hwdescs.mem,
desc->hwdescs.dma);
dma_free_coherent(chan->chan.device->dev, desc->hwdescs.size,
desc->hwdescs.mem, desc->hwdescs.dma);
desc->hwdescs.mem = NULL;
desc->hwdescs.size = 0;
}
@ -664,8 +664,8 @@ static void rcar_dmac_realloc_hwdesc(struct rcar_dmac_chan *chan,
if (!size)
return;
desc->hwdescs.mem = dma_alloc_coherent(NULL, size, &desc->hwdescs.dma,
GFP_NOWAIT);
desc->hwdescs.mem = dma_alloc_coherent(chan->chan.device->dev, size,
&desc->hwdescs.dma, GFP_NOWAIT);
if (!desc->hwdescs.mem)
return;