powerpc: expect all devices calling dma ops to have archdata set

Now that we set archdata for of_platform and platform devices via
platform_notify() we no longer need to special case having a NULL device
pointer or NULL archdata.  It should be a driver error if this condition
shows up and the driver should be fixed.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

1 files changed, 1 insertions, 11 deletions

diff --git a/arch/powerpc/include/asm/dma-mapping.h b/arch/powerpc/include/asm/dma-mapping.h
index 86cef7ddc8d..c69f2b5f0cc 100644
--- a/arch/powerpc/include/asm/dma-mapping.h
+++ b/arch/powerpc/include/asm/dma-mapping.h
@@ -109,18 +109,8 @@ static inline struct dma_mapping_ops *get_dma_ops(struct device *dev)
          * only ISA DMA device we support is the floppy and we have a hack
          * in the floppy driver directly to get a device for us.
          */
-
-        if (unlikely(dev == NULL) || dev->archdata.dma_ops == NULL) {
-#ifdef CONFIG_PPC64
+        if (unlikely(dev == NULL))
                 return NULL;
-#else
-                /* Use default on 32-bit if dma_ops is not set up */
-                /* TODO: Long term, we should fix drivers so that dev and
-                 * archdata dma_ops are set up for all buses.
-                 */
-                return &dma_direct_ops;
-#endif
-        }
 
         return dev->archdata.dma_ops;
 }