diff --git a/[refs] b/[refs]
index 6525a4f33608..89dfebf28fb5 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: db5b493ac78e46c7b6bad22cd25d8041564cd8ea
+refs/heads/master: 7e75bf3ff3a716d7b21d8fb43bf823115801c1e9
diff --git a/trunk/fs/btrfs/disk-io.c b/trunk/fs/btrfs/disk-io.c
index 00cbb41af660..2bdb124333ab 100644
--- a/trunk/fs/btrfs/disk-io.c
+++ b/trunk/fs/btrfs/disk-io.c
@@ -29,6 +29,7 @@
 #include <linux/crc32c.h>
 #include <linux/slab.h>
 #include <linux/migrate.h>
+#include <asm/unaligned.h>
 #include "compat.h"
 #include "ctree.h"
 #include "disk-io.h"
@@ -198,7 +199,7 @@ u32 btrfs_csum_data(struct btrfs_root *root, char *data, u32 seed, size_t len)
 
 void btrfs_csum_final(u32 crc, char *result)
 {
-	*(__le32 *)result = ~cpu_to_le32(crc);
+	put_unaligned_le32(~crc, result);
 }
 
 /*