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-rw-r--r--arch/alpha/kernel/pci_iommu.c16
1 files changed, 5 insertions, 11 deletions
diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c
index 46e08e0d9181..aa0f50d0f823 100644
--- a/arch/alpha/kernel/pci_iommu.c
+++ b/arch/alpha/kernel/pci_iommu.c
@@ -291,7 +291,7 @@ pci_map_single_1(struct pci_dev *pdev, void *cpu_addr, size_t size,
use direct_map above, it now must be considered an error. */
if (! alpha_mv.mv_pci_tbi) {
printk_once(KERN_WARNING "pci_map_single: no HW sg\n");
- return 0;
+ return DMA_MAPPING_ERROR;
}
arena = hose->sg_pci;
@@ -307,7 +307,7 @@ pci_map_single_1(struct pci_dev *pdev, void *cpu_addr, size_t size,
if (dma_ofs < 0) {
printk(KERN_WARNING "pci_map_single failed: "
"could not allocate dma page tables\n");
- return 0;
+ return DMA_MAPPING_ERROR;
}
paddr &= PAGE_MASK;
@@ -443,7 +443,7 @@ static void *alpha_pci_alloc_coherent(struct device *dev, size_t size,
gfp &= ~GFP_DMA;
try_again:
- cpu_addr = (void *)__get_free_pages(gfp, order);
+ cpu_addr = (void *)__get_free_pages(gfp | __GFP_ZERO, order);
if (! cpu_addr) {
printk(KERN_INFO "pci_alloc_consistent: "
"get_free_pages failed from %pf\n",
@@ -455,7 +455,7 @@ try_again:
memset(cpu_addr, 0, size);
*dma_addrp = pci_map_single_1(pdev, cpu_addr, size, 0);
- if (*dma_addrp == 0) {
+ if (*dma_addrp == DMA_MAPPING_ERROR) {
free_pages((unsigned long)cpu_addr, order);
if (alpha_mv.mv_pci_tbi || (gfp & GFP_DMA))
return NULL;
@@ -671,7 +671,7 @@ static int alpha_pci_map_sg(struct device *dev, struct scatterlist *sg,
sg->dma_address
= pci_map_single_1(pdev, SG_ENT_VIRT_ADDRESS(sg),
sg->length, dac_allowed);
- return sg->dma_address != 0;
+ return sg->dma_address != DMA_MAPPING_ERROR;
}
start = sg;
@@ -935,11 +935,6 @@ iommu_unbind(struct pci_iommu_arena *arena, long pg_start, long pg_count)
return 0;
}
-static int alpha_pci_mapping_error(struct device *dev, dma_addr_t dma_addr)
-{
- return dma_addr == 0;
-}
-
const struct dma_map_ops alpha_pci_ops = {
.alloc = alpha_pci_alloc_coherent,
.free = alpha_pci_free_coherent,
@@ -947,7 +942,6 @@ const struct dma_map_ops alpha_pci_ops = {
.unmap_page = alpha_pci_unmap_page,
.map_sg = alpha_pci_map_sg,
.unmap_sg = alpha_pci_unmap_sg,
- .mapping_error = alpha_pci_mapping_error,
.dma_supported = alpha_pci_supported,
};
EXPORT_SYMBOL(alpha_pci_ops);