[POWERPC] Create and use get_pci_dma_ops()
This allows us to hide pci_dma_ops.
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/include/asm-powerpc/pci.h b/include/asm-powerpc/pci.h
index ebf31f1..ce0f13e 100644
--- a/include/asm-powerpc/pci.h
+++ b/include/asm-powerpc/pci.h
@@ -71,17 +71,18 @@
#define PCI_DISABLE_MWI
#ifdef CONFIG_PCI
-extern struct dma_mapping_ops *pci_dma_ops;
-
extern void set_pci_dma_ops(struct dma_mapping_ops *dma_ops);
+extern struct dma_mapping_ops *get_pci_dma_ops(void);
/* For DAC DMA, we currently don't support it by default, but
* we let 64-bit platforms override this.
*/
static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask)
{
- if (pci_dma_ops && pci_dma_ops->dac_dma_supported)
- return pci_dma_ops->dac_dma_supported(&hwdev->dev, mask);
+ struct dma_mapping_ops *d = get_pci_dma_ops();
+
+ if (d && d->dac_dma_supported)
+ return d->dac_dma_supported(&hwdev->dev, mask);
return 0;
}
@@ -103,6 +104,7 @@
}
#else /* CONFIG_PCI */
#define set_pci_dma_ops(d)
+#define get_pci_dma_ops() NULL
#endif
extern int pci_domain_nr(struct pci_bus *bus);