[U-Boot] [PATCH] cmd/fdt.c align data buffer to avoid unaligned word access

[Bernhard Messerklinger]

Since the compiler is free to place a char array to any address in
memory (in this case the stack), also to a non word aligned address the
function "fdt_prop_parse" runs into troubles upon it wants to write some
(fdt32_t *) to such a variable (if it has been placed to a none word
aligned address).

To avoid this we tell the compiler to always align this scratchpad to a
word aligned address.

Signed-off-by: Bernhard Messerklinger <bernhard.messerklinger at br-automation.com>
---

 cmd/fdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cmd/fdt.c b/cmd/fdt.c
index d7654b2c4f..aa9cb4b3c1 100644
--- a/cmd/fdt.c
+++ b/cmd/fdt.c
@@ -256,7 +256,7 @@ static int do_fdt(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 		char *pathp;		/* path */
 		char *prop;		/* property */
 		int  nodeoffset;	/* node offset from libfdt */
-		static char data[SCRATCHPAD];	/* storage for the property */
+		static char data[SCRATCHPAD] __aligned(4);/* property storage */
 		const void *ptmp;
 		int  len;		/* new length of the property */
 		int  ret;		/* return value */
-- 
2.14.1