[ARM] Add a reference from struct device to the dma bounce info

dmabounce keeps a per-device structure, and finds the correct
structure by walking a list.  Since architectures can now add
fields to struct device, we can attach this structure direct to
the struct device, thereby eliminating the code to search the
list.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 9 insertions, 1 deletions

diff --git a/include/asm-arm/device.h b/include/asm-arm/device.h
index d8f9872b0e2d..c61642b40603 100644
--- a/include/asm-arm/device.h
+++ b/include/asm-arm/device.h
@@ -3,5 +3,13 @@
  *
  * This file is released under the GPLv2
  */
-#include <asm-generic/device.h>
+#ifndef ASMARM_DEVICE_H
+#define ASMARM_DEVICE_H
 
+struct dev_archdata {
+#ifdef CONFIG_DMABOUNCE
+        struct dmabounce_device_info *dmabounce;
+#endif
+};
+
+#endif