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authorJunichi Nomura <j-nomura@ce.jp.nec.com>2015-09-14 07:38:36 +0000
committerThomas Gleixner <tglx@linutronix.de>2015-09-17 16:22:11 +0200
commit590f07874e8e3c83729b919312c65aea2533c8cf (patch)
treee79e7338f0f3186d386ee5f4cae3c13636354795 /arch/x86/kernel/pci-dma.c
parent6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357f (diff)
x86/pci/dma: Fix gfp flags for coherent DMA memory allocation
Commit 6894258eda2f 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: 6894258eda2f ("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>
Diffstat (limited to 'arch/x86/kernel/pci-dma.c')
-rw-r--r--arch/x86/kernel/pci-dma.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index 84b8ef82a159..1b55de1267cf 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -131,8 +131,8 @@ void dma_generic_free_coherent(struct device *dev, size_t size, void *vaddr,
bool arch_dma_alloc_attrs(struct device **dev, gfp_t *gfp)
{
- *gfp = dma_alloc_coherent_gfp_flags(*dev, *gfp);
*gfp &= ~(__GFP_DMA | __GFP_HIGHMEM | __GFP_DMA32);
+ *gfp = dma_alloc_coherent_gfp_flags(*dev, *gfp);
if (!*dev)
*dev = &x86_dma_fallback_dev;