From 55b523b7d4ab885142f77d388007eb5490ba6bf4 Mon Sep 17 00:00:00 2001 From: Stephen Warren <swarren@nvidia.com> Date: Tue, 18 Sep 2012 08:05:28 +0000 Subject: ext4: cache-align buffers so the invalidation works DMA buffer cache invalidation requires that buffers have cache-aligned buffer locations and sizes. Use memalign() and ALLOC_CACHE_ALIGN_BUFFER() to ensure this. On Tegra at least, without this fix, the following fail commands fail in u-boot-master/ext4, but succeeded at the branch's branch point in u-boot/master. With this fix, the commands work again: ext2ls mmc 0:1 / ext2load mmc 0:1 /boot/zImage Cc: Uma Shankar <uma.shankar@samsung.com> Cc: Manjunatha C Achar <a.manjunatha@samsung.com> Cc: Iqbal Shareef <iqbal.ams@samsung.com> Cc: Hakgoo Lee <goodguy.lee@samsung.com> Cc: Wolfgang Denk <wd@denx.de> Cc: Tom Rini <trini@ti.com> Signed-off-by: Stephen Warren <swarren@nvidia.com> --- fs/ext4/ext4_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/ext4/ext4_common.c') diff --git a/fs/ext4/ext4_common.c b/fs/ext4/ext4_common.c index 083e45e..3deffd5 100644 --- a/fs/ext4/ext4_common.c +++ b/fs/ext4/ext4_common.c @@ -71,7 +71,7 @@ void put_ext4(uint64_t off, void *buf, uint32_t size) uint64_t startblock; uint64_t remainder; unsigned char *temp_ptr = NULL; - unsigned char sec_buf[SECTOR_SIZE]; + ALLOC_CACHE_ALIGN_BUFFER(unsigned char, sec_buf, SECTOR_SIZE); struct ext_filesystem *fs = get_fs(); startblock = off / (uint64_t)SECTOR_SIZE; -- cgit v1.1