fs: fat: fix link error when building with DEBUG=1
When compiling with DEBUG=1 an error
fs/fat/fat_write.c:831: undefined reference to `__aeabi_ldivmod'
occurred.
We should use do_div() instead of the modulus operator.
filesize and cur_pos cannot be negative. So let's use u64 to avoid
warnings.
Fixes: cb8af8af5ba0 ("fs: fat: support write with non-zero offset")
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index 3272412..852f874 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -696,11 +696,11 @@
set_contents(fsdata *mydata, dir_entry *dentptr, loff_t pos, __u8 *buffer,
loff_t maxsize, loff_t *gotsize)
{
- loff_t filesize;
unsigned int bytesperclust = mydata->clust_size * mydata->sect_size;
__u32 curclust = START(dentptr);
__u32 endclust = 0, newclust = 0;
- loff_t cur_pos, offset, actsize, wsize;
+ u64 cur_pos, filesize;
+ loff_t offset, actsize, wsize;
*gotsize = 0;
filesize = pos + maxsize;
@@ -828,7 +828,7 @@
curclust = endclust;
filesize -= cur_pos;
- assert(!(cur_pos % bytesperclust));
+ assert(!do_div(cur_pos, bytesperclust));
set_clusters:
/* allocate and write */