diff options
| author | Stephen Warren <swarren@nvidia.com> | 2012-09-18 08:05:28 +0000 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2012-09-20 11:07:26 -0700 |
| commit | 55b523b7d4ab885142f77d388007eb5490ba6bf4 (patch) | |
| tree | 52860da4203f49ccc80bed7e1703d41b96c7fdd7 /fs/ext4/ext4_common.h | |
| parent | ed34f34dbaf206dfe223f4bc2147d600fe1b0f58 (diff) | |
| download | talos-obmc-uboot-55b523b7d4ab885142f77d388007eb5490ba6bf4.tar.gz talos-obmc-uboot-55b523b7d4ab885142f77d388007eb5490ba6bf4.zip | |
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>
Diffstat (limited to 'fs/ext4/ext4_common.h')
| -rw-r--r-- | fs/ext4/ext4_common.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/fs/ext4/ext4_common.h b/fs/ext4/ext4_common.h index 801b8b848a..0af625db2b 100644 --- a/fs/ext4/ext4_common.h +++ b/fs/ext4/ext4_common.h @@ -55,7 +55,12 @@ #define SUPERBLOCK_SIZE 1024 #define F_FILE 1 -#define zalloc(size) calloc(1, size) +static inline void *zalloc(size_t size) +{ + void *p = memalign(ARCH_DMA_MINALIGN, size); + memset(p, 0, size); + return p; +} extern unsigned long part_offset; int ext4fs_read_inode(struct ext2_data *data, int ino, |
