x86: add free_coherent dma_ops callback to NOMMU driver

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
git-mirror · Aug 22, 2008 · a3a7653 · a3a7653
1 parent c5e835f
commit a3a7653
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
@@ -126,8 +126,15 @@ nommu_alloc_coherent(struct device *hwdev, size_t size,
 	return NULL;
 }
 
+static void nommu_free_coherent(struct device *dev, size_t size, void *vaddr,
+				dma_addr_t dma_addr)
+{
+	free_pages((unsigned long)vaddr, get_order(size));
+}
+
 struct dma_mapping_ops nommu_dma_ops = {
 	.alloc_coherent = nommu_alloc_coherent,
+	.free_coherent = nommu_free_coherent,
 	.map_single = nommu_map_single,
 	.map_sg = nommu_map_sg,
 	.is_phys = 1,