btrfs: change btrfs_csum_final result param type to u8

csum member of struct btrfs_super_block has array type of u8. It makes
sense that function btrfs_csum_final should be also declared to accept
u8 *. I changed the declaration of method void btrfs_csum_final(u32 crc,
char *result); to void btrfs_csum_final(u32 crc, u8 *result);

Signed-off-by: Domagoj Tršan <domagoj.trsan@gmail.com>
[ changed cast to u8 at several call sites ]
Signed-off-by: David Sterba <dsterba@suse.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index a754865b3cb1..e690d386ee5e 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -476,7 +476,7 @@ static void io_ctl_set_crc(struct btrfs_io_ctl *io_ctl, int index)
 
         crc = btrfs_csum_data(io_ctl->orig + offset, crc,
                               PAGE_SIZE - offset);
-        btrfs_csum_final(crc, (char *)&crc);
+        btrfs_csum_final(crc, (u8 *)&crc);
         io_ctl_unmap_page(io_ctl);
         tmp = page_address(io_ctl->pages[0]);
         tmp += index;
@@ -504,7 +504,7 @@ static int io_ctl_check_crc(struct btrfs_io_ctl *io_ctl, int index)
         io_ctl_map_page(io_ctl, 0);
         crc = btrfs_csum_data(io_ctl->orig + offset, crc,
                               PAGE_SIZE - offset);
-        btrfs_csum_final(crc, (char *)&crc);
+        btrfs_csum_final(crc, (u8 *)&crc);
         if (val != crc) {
                 btrfs_err_rl(io_ctl->root->fs_info,
                         "csum mismatch on free space cache");