[PATCH] powerpc iommu: minor cleanup

A couple of minor renames:

* The iommu_table is no longer a part of the device node structure,
  so devnode_table is misleading
* Rename struct device *-variables to hwdev

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Paul Mackerras <paulus@samba.org>

diff --git a/arch/powerpc/kernel/pci_iommu.c b/arch/powerpc/kernel/pci_iommu.c
index c1d95e14bbed21e8f979367baa5ee1a2b71c9a69..48aa82d01624f7f20e63e3c0203f05cc44f05d76 100644 (file)
--- a/arch/powerpc/kernel/pci_iommu.c
+++ b/arch/powerpc/kernel/pci_iommu.c
@@ -44,16 +44,16 @@
  */
 #define PCI_GET_DN(dev) ((struct device_node *)((dev)->sysdata))
 
-static inline struct iommu_table *devnode_table(struct device *dev)
+static inline struct iommu_table *device_to_table(struct device *hwdev)
 {
        struct pci_dev *pdev;
 
-       if (!dev) {
+       if (!hwdev) {
                pdev = ppc64_isabridge_dev;
                if (!pdev)
                        return NULL;
        } else
-               pdev = to_pci_dev(dev);
+               pdev = to_pci_dev(hwdev);
 
        return PCI_DN(PCI_GET_DN(pdev))->iommu_table;
 }
@@ -85,14 +85,14 @@ static inline unsigned long device_to_mask(struct device *hwdev)
 static void *pci_iommu_alloc_coherent(struct device *hwdev, size_t size,
                           dma_addr_t *dma_handle, gfp_t flag)
 {
-       return iommu_alloc_coherent(devnode_table(hwdev), size, dma_handle,
+       return iommu_alloc_coherent(device_to_table(hwdev), size, dma_handle,
                        device_to_mask(hwdev), flag);
 }
 
 static void pci_iommu_free_coherent(struct device *hwdev, size_t size,
                         void *vaddr, dma_addr_t dma_handle)
 {
-       iommu_free_coherent(devnode_table(hwdev), size, vaddr, dma_handle);
+       iommu_free_coherent(device_to_table(hwdev), size, vaddr, dma_handle);
 }
 
 /* Creates TCEs for a user provided buffer.  The user buffer must be 
@@ -104,7 +104,7 @@ static void pci_iommu_free_coherent(struct device *hwdev, size_t size,
 static dma_addr_t pci_iommu_map_single(struct device *hwdev, void *vaddr,
                size_t size, enum dma_data_direction direction)
 {
-       return iommu_map_single(devnode_table(hwdev), vaddr, size,
+       return iommu_map_single(device_to_table(hwdev), vaddr, size,
                                device_to_mask(hwdev), direction);
 }
 
@@ -112,27 +112,27 @@ static dma_addr_t pci_iommu_map_single(struct device *hwdev, void *vaddr,
 static void pci_iommu_unmap_single(struct device *hwdev, dma_addr_t dma_handle,
                size_t size, enum dma_data_direction direction)
 {
-       iommu_unmap_single(devnode_table(hwdev), dma_handle, size, direction);
+       iommu_unmap_single(device_to_table(hwdev), dma_handle, size, direction);
 }
 
 
 static int pci_iommu_map_sg(struct device *pdev, struct scatterlist *sglist,
                int nelems, enum dma_data_direction direction)
 {
-       return iommu_map_sg(pdev, devnode_table(pdev), sglist,
+       return iommu_map_sg(pdev, device_to_table(pdev), sglist,
                        nelems, device_to_mask(pdev), direction);
 }
 
 static void pci_iommu_unmap_sg(struct device *pdev, struct scatterlist *sglist,
                int nelems, enum dma_data_direction direction)
 {
-       iommu_unmap_sg(devnode_table(pdev), sglist, nelems, direction);
+       iommu_unmap_sg(device_to_table(pdev), sglist, nelems, direction);
 }
 
 /* We support DMA to/from any memory page via the iommu */
 static int pci_iommu_dma_supported(struct device *dev, u64 mask)
 {
-       struct iommu_table *tbl = devnode_table(dev);
+       struct iommu_table *tbl = device_to_table(dev);
 
        if (!tbl || tbl->it_offset > mask) {
                printk(KERN_INFO "Warning: IOMMU table offset too big for device mask\n");