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iommu/vt-d: Remove unused dma_to_mm_pfn function
Remove dma_to_buf_pfn function, which is not used in the codebase. This was pointed by clang with the following warning: 'dma_to_mm_pfn' [-Wunused-function] static inline unsigned long dma_to_mm_pfn(unsigned long dma_pfn) ^ https://lore.kernel.org/r/YYhY7GqlrcTZlzuA@fedora drivers/iommu/intel/iommu.c:136:29: warning: unused function Signed-off-by: Maíra Canal <maira.canal@usp.br> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/r/20211217083817.1745419-4-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
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@ -133,11 +133,6 @@ static inline unsigned long lvl_to_nr_pages(unsigned int lvl)
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/* VT-d pages must always be _smaller_ than MM pages. Otherwise things
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are never going to work. */
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static inline unsigned long dma_to_mm_pfn(unsigned long dma_pfn)
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{
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return dma_pfn >> (PAGE_SHIFT - VTD_PAGE_SHIFT);
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}
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static inline unsigned long mm_to_dma_pfn(unsigned long mm_pfn)
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{
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return mm_pfn << (PAGE_SHIFT - VTD_PAGE_SHIFT);
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