staging: most: dim2: use device to allocate coherent memory
On several architectures the allocation of coherent memory needs a device that has the dma_ops structure properly initialized. This patch enables the DIM2 platform to be used to allocate this type of memory. Signed-off-by: Christian Gromm <christian.gromm@microchip.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -683,12 +683,16 @@ static int poison_channel(struct most_interface *most_iface, int ch_idx)
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static void *dma_alloc(struct mbo *mbo, u32 size)
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{
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return dma_alloc_coherent(NULL, size, &mbo->bus_address, GFP_KERNEL);
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struct device *dev = mbo->ifp->driver_dev;
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return dma_alloc_coherent(dev, size, &mbo->bus_address, GFP_KERNEL);
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}
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static void dma_free(struct mbo *mbo, u32 size)
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{
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dma_free_coherent(NULL, size, mbo->virt_address, mbo->bus_address);
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struct device *dev = mbo->ifp->driver_dev;
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dma_free_coherent(dev, size, mbo->virt_address, mbo->bus_address);
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}
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static const struct of_device_id dim2_of_match[];
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@ -870,6 +874,7 @@ static int dim2_probe(struct platform_device *pdev)
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dev->most_iface.dma_free = dma_free;
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dev->most_iface.poison_channel = poison_channel;
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dev->most_iface.request_netinfo = request_netinfo;
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dev->most_iface.driver_dev = &pdev->dev;
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dev->dev.init_name = "dim2_state";
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dev->dev.parent = &dev->most_iface.dev;
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