fat: Prepare API change for files greater than 2GB

Change the internal FAT functions to use loff_t for offsets.

Signed-off-by: Suriyan Ramasami <suriyan.r@gmail.com>
Acked-by: Simon Glass <sjg@chromium.org>
[trini: Fix fs/fat/fat.c for min3 updates]
Signed-off-by: Tom Rini <trini@ti.com>
diff --git a/common/cmd_fat.c b/common/cmd_fat.c
index 633fbf1..c00fb28 100644
--- a/common/cmd_fat.c
+++ b/common/cmd_fat.c
@@ -100,7 +100,8 @@
 static int do_fat_fswrite(cmd_tbl_t *cmdtp, int flag,
 		int argc, char * const argv[])
 {
-	long size;
+	loff_t size;
+	int ret;
 	unsigned long addr;
 	unsigned long count;
 	block_dev_desc_t *dev_desc = NULL;
@@ -127,15 +128,15 @@
 	count = simple_strtoul(argv[5], NULL, 16);
 
 	buf = map_sysmem(addr, count);
-	size = file_fat_write(argv[4], buf, count);
+	ret = file_fat_write(argv[4], buf, 0, count, &size);
 	unmap_sysmem(buf);
-	if (size == -1) {
+	if (ret < 0) {
 		printf("\n** Unable to write \"%s\" from %s %d:%d **\n",
 			argv[4], argv[1], dev, part);
 		return 1;
 	}
 
-	printf("%ld bytes written\n", size);
+	printf("%llu bytes written\n", size);
 
 	return 0;
 }
diff --git a/common/env_fat.c b/common/env_fat.c
index 8db0160..e4c8489 100644
--- a/common/env_fat.c
+++ b/common/env_fat.c
@@ -41,6 +41,7 @@
 	disk_partition_t info;
 	int dev, part;
 	int err;
+	loff_t size;
 
 	err = env_export(&env_new);
 	if (err)
@@ -59,7 +60,8 @@
 		return 1;
 	}
 
-	err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, sizeof(env_t));
+	err = file_fat_write(FAT_ENV_FILE, (void *)&env_new, 0, sizeof(env_t),
+			     &size);
 	if (err == -1) {
 		printf("\n** Unable to write \"%s\" from %s%d:%d **\n",
 			FAT_ENV_FILE, FAT_ENV_INTERFACE, dev, part);