Patchwork [3.11,116/208] nfs: fix do_div() warning by instead using sector_div()

login
register
mail settings
Submitter Luis Henriques
Date Dec. 19, 2013, 11:53 a.m.
Message ID <1387454106-19326-117-git-send-email-luis.henriques@canonical.com>
Download mbox | patch
Permalink /patch/303499/
State New
Headers show

Comments

Luis Henriques - Dec. 19, 2013, 11:53 a.m.
3.11.10.2 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Helge Deller <deller@gmx.de>

commit 3873d064b8538686bbbd4b858dc8a07db1f7f43a upstream.

When compiling a 32bit kernel with CONFIG_LBDAF=n the compiler complains like
shown below.  Fix this warning by instead using sector_div() which is provided
by the kernel.h header file.

fs/nfs/blocklayout/extents.c: In function ‘normalize’:
include/asm-generic/div64.h:43:28: warning: comparison of distinct pointer types lacks a cast [enabled by default]
fs/nfs/blocklayout/extents.c:47:13: note: in expansion of macro ‘do_div’
nfs/blocklayout/extents.c:47:2: warning: right shift count >= width of type [enabled by default]
fs/nfs/blocklayout/extents.c:47:2: warning: passing argument 1 of ‘__div64_32’ from incompatible pointer type [enabled by default]
include/asm-generic/div64.h:35:17: note: expected ‘uint64_t *’ but argument is of type ‘sector_t *’
 extern uint32_t __div64_32(uint64_t *dividend, uint32_t divisor);

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
---
 fs/nfs/blocklayout/extents.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Patch

diff --git a/fs/nfs/blocklayout/extents.c b/fs/nfs/blocklayout/extents.c
index 9c3e117..4d01614 100644
--- a/fs/nfs/blocklayout/extents.c
+++ b/fs/nfs/blocklayout/extents.c
@@ -44,7 +44,7 @@ 
 static inline sector_t normalize(sector_t s, int base)
 {
 	sector_t tmp = s; /* Since do_div modifies its argument */
-	return s - do_div(tmp, base);
+	return s - sector_div(tmp, base);
 }
 
 static inline sector_t normalize_up(sector_t s, int base)