[PATCH] Make of_read_number() handle unaligned data

[David VomLehn]

Numeric values in properties can be unaligned, so introduce get_unaligned()
in of_read_number() to make this work correctly on all processors.

Signed-off-by: David VomLehn <dvomlehn at cisco.com>
---
 include/linux/of.h |    8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/include/linux/of.h b/include/linux/of.h
index cad7cf0..a0a6925 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -22,6 +22,7 @@
 #include <linux/spinlock.h>
 
 #include <asm/byteorder.h>
+#include <asm/unaligned.h>
 
 #ifdef CONFIG_OF
 
@@ -110,8 +111,11 @@ extern void of_node_put(struct device_node *node);
 static inline u64 of_read_number(const __be32 *cell, int size)
 {
 	u64 r = 0;
-	while (size--)
-		r = (r << 32) | be32_to_cpu(*(cell++));
+	while (size--) {
+		r = (r << 32) | be32_to_cpu(get_unaligned(cell));
+		cell++;
+	}
+
 	return r;
 }