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>

diff --git a/arch/x86/kernel/pci-nommu.c b/arch/x86/kernel/pci-nommu.c
index b8ce83c982110c72e28aa9772bc068f93da59304..73853d3fdcacfec32d1fb4adb697c9ec9e8f0e9f 100644 (file)
--- a/arch/x86/kernel/pci-nommu.c
+++ b/arch/x86/kernel/pci-nommu.c
@@ -126,8 +126,15 @@ again:
        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,