fs/ext4/ext4fs.c, fs/fs.c fs/fat/fat_write.c: Adjust 64bit math methods
The changes to introduce loff_t into filesize means that we need to do
64bit math on 32bit platforms. Make sure we use the right wrappers for
these operations.
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Suriyan Ramasami <suriyan.r@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@ti.com>
Tested-by: Pierre Aubert <p.aubert@staubli.com>
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index 88dd495..98b88ad 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -13,6 +13,8 @@
#include <asm/byteorder.h>
#include <part.h>
#include <linux/ctype.h>
+#include <div64.h>
+#include <linux/math64.h>
#include "fat.c"
static void uppercase(char *str, int len)
@@ -770,7 +772,7 @@
*/
static int check_overflow(fsdata *mydata, __u32 clustnum, loff_t size)
{
- __u32 startsect, sect_num;
+ __u32 startsect, sect_num, offset;
if (clustnum > 0) {
startsect = mydata->data_begin +
@@ -779,13 +781,13 @@
startsect = mydata->rootdir_sect;
}
- sect_num = size / mydata->sect_size;
- if (size % mydata->sect_size)
+ sect_num = div_u64_rem(size, mydata->sect_size, &offset);
+
+ if (offset != 0)
sect_num++;
if (startsect + sect_num > cur_part_info.start + total_sector)
return -1;
-
return 0;
}