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arm64: fix warnings without CONFIG_IOMMU_DMA 

__swiotlb_get_sgtable_page and __swiotlb_mmap_pfn are not only misnamed
but also only used if CONFIG_IOMMU_DMA is set.  Just add a simple ifdef
for now, given that we plan to remove them entirely for the next merge
window.

Reported-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Will Deacon <will.deacon@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Christoph Hellwig 2018-10-30 09:41:29 +02:00
parent 8adcc59974
commit f62717551b
1 changed files with 2 additions and 0 deletions
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2
arch/arm64/mm/dma-mapping.c
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@ -160,6 +160,7 @@ void arch_sync_dma_for_cpu(struct device *dev, phys_addr_t paddr,
__dma_unmap_area(phys_to_virt(paddr), size, dir);
}
#ifdef CONFIG_IOMMU_DMA
static int __swiotlb_get_sgtable_page(struct sg_table *sgt,
struct page *page, size_t size)
{
@ -188,6 +189,7 @@ static int __swiotlb_mmap_pfn(struct vm_area_struct *vma,
return ret;
}
#endif /* CONFIG_IOMMU_DMA */
static int __init atomic_pool_init(void)
{