x86/pci/dma: Fix gfp flags for coherent DMA memory allocation
Commit6894258eda
reversed the order of gfp_flags adjustment in dma_alloc_attrs() for x86 [arch/x86/kernel/pci-dma.c] As a result, relevant flags set by dma_alloc_coherent_gfp_flags() are just discarded and cause coherent DMA memory allocation failure on some devices. Fixes:6894258eda
("dma-mapping: consolidate dma_{alloc,free}_{attrs,coherent}") Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Tested-by: Tony Luck <tony.luck@intel.com> Acked-by: Christoph Hellwig <hch@lst.de> Link: http://lkml.kernel.org/r/20150914073834.GA13077@xzibit.linux.bs1.fc.nec.co.jp Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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6ff33f3902
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590f07874e
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@ -131,8 +131,8 @@ void dma_generic_free_coherent(struct device *dev, size_t size, void *vaddr,
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bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp)
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{
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*gfp = dma_alloc_coherent_gfp_flags(*dev, *gfp);
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*gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
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*gfp = dma_alloc_coherent_gfp_flags(*dev, *gfp);
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if (!*dev)
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*dev = &x86_dma_fallback_dev;
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