From: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Date: Tue, 8 Apr 2014 02:12:46 +0000 (+0900)
Subject: fs: fat: Fix cache align error message in fatwrite
X-Git-Tag: submit/tizen/20160318.071304~57
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=05c96313153b7b5866448cc8bbb3e7b941bf9d03;p=profile%2Fcommon%2Fplatform%2Fkernel%2Fu-boot-artik.git

fs: fat: Fix cache align error message in fatwrite

Use of malloc of do_fat_write() causes cache error on ARM v7 platforms.
Perhaps, the same problem will occur at any other CPUs.
This replaces malloc with memalign to fix cache buffer alignment.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Yoshiyuki Ito <yoshiyuki.ito.ub@renesas.com>
Tested-by: Hector Palacios <hector.palacios@digi.com>
---

diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index a05327c6a..c4ef13857 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -968,7 +968,7 @@ static int do_fat_write(const char *filename, void *buffer,
 	}
 
 	mydata->fatbufnum = -1;
-	mydata->fatbuf = malloc(FATBUFSIZE);
+	mydata->fatbuf = memalign(ARCH_DMA_MINALIGN, FATBUFSIZE);
 	if (mydata->fatbuf == NULL) {
 		debug("Error: allocating memory\n");
 		return -1;