Driver core: add dev_archdata to struct device

Add arch specific dev_archdata to struct device

Adds an arch specific struct dev_arch to struct device. This enables
architecture to add specific fields to every device in the system, like
DMA operation pointers, NUMA node ID, firmware specific data, etc...

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Andi Kleen <ak@suse.de>
Acked-By: David Howells <dhowells@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/include/linux/device.h b/include/linux/device.h
index 00b29e0c5ce0..5b54d756cd54 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -21,6 +21,7 @@
 #include <linux/pm.h>
 #include <asm/semaphore.h>
 #include <asm/atomic.h>
+#include <asm/device.h>
 
 #define DEVICE_NAME_SIZE        50
 #define DEVICE_NAME_HALF        __stringify(20) /* Less than half to accommodate slop */
@@ -383,6 +384,8 @@ struct device {
 
         struct dma_coherent_mem *dma_mem; /* internal for coherent mem
                                              override */
+        /* arch specific additions */
+        struct dev_archdata     archdata;
 
         /* class_device migration path */
         struct list_head        node;