[PATCH] Orion NAND: Make dword load asm volatile to avoid GCC optimizing it away

[Simon Kagstrom]

GCC 4.3.3 happily removes the dword load instruction in
orion_nand_read_buf. This patch makes the inline assembly volatile to
avoid this situation.

Signed-off-by: Simon Kagstrom <simon.kagstrom at netinsight.net>
---
 drivers/mtd/nand/orion_nand.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c
index 7ad9722..3f9b113 100644
--- a/drivers/mtd/nand/orion_nand.c
+++ b/drivers/mtd/nand/orion_nand.c
@@ -61,7 +61,7 @@ static void orion_nand_read_buf(struct mtd_info *mtd, uint8_t *buf, int len)
 	buf64 = (uint64_t *)buf;
 	while (i < len/8) {
 		uint64_t x;
-		asm ("ldrd\t%0, [%1]" : "=r" (x) : "r" (io_base));
+		asm volatile ("ldrd\t%0, [%1]" : "=r" (x) : "r" (io_base));
 		buf64[i++] = x;
 	}
 	i *= 8;
-- 
1.6.0.4