Re: dma_alloc_coherent() on PPC32: physical addresses above 2G possible?

On Sun, 20 Jul 2008 21:25:51 +0200
Stefan Richter [off-list ref] wrote:

Later on:

	if (dev->needs_dma_mask_workaround)
		pci_set_consistent_dma_mask(pdev, DMA_31BIT_MASK);
	allocate_something_special;
	if (dev->needs_dma_mask_workaround)
		pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);

Or is there a variant of dma_alloc_coherent() which directly accepts a
mask argument?

something like this.
But realistically, how many consistent/coherent allocations do you have?
some ring buffers and other one time stuff surely... but not after that?

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