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dma-mapping: make dma_atomic_pool_init self-contained

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The memory allocated for the atomic pool needs to have the same
mapping attributes that we use for remapping, so use
pgprot_dmacoherent instead of open coding it.  Also deduct a
suitable zone to allocate the memory from based on the presence
of the DMA zones.

Signed-off-by: Christoph Hellwig <[email protected]>
This commit is contained in:
Christoph Hellwig 2019-08-03 12:42:15 +03:00
commit 8e3a68fb55
6 changed files with 14 additions and 28 deletions
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6
arch/arc/mm/dma.c
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@ -104,9 +104,3 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size,
dev_info(dev, "use %sncoherent DMA ops\n",
dev->dma_coherent ? "" : "non");
}
static int __init atomic_pool_init(void)
{
return dma_atomic_pool_init(GFP_KERNEL, pgprot_noncached(PAGE_KERNEL));
}
postcore_initcall(atomic_pool_init);