+ drivers-video-matrox-matroxfb_mavenc-fix-unsigned-return-type.patch added to -mm tree

+ drivers-video-matrox-matroxfb_mavenc-fix-unsigned-return-type.patch added to -mm tree

[akpm]

The patch titled
     drivers/video/matrox/matroxfb_maven.c: fix unsigned return type
has been added to the -mm tree.  Its filename is
     drivers-video-matrox-matroxfb_mavenc-fix-unsigned-return-type.patch

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See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this

The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/

------------------------------------------------------
Subject: drivers/video/matrox/matroxfb_maven.c: fix unsigned return type
From: Julia Lawall <julia@diku.dk>

The function has an unsigned return type, but returns a negative constant
to indicate an error condition.  The result of calling the function is
only tested by comparison to 0, and thus unsigned is not needed and can be
dropped from the return type.

A sematic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@exists@
identifier f;
constant C;
@@

 unsigned f(...)
 { <+...
*  return -C;
 ...+> }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Petr Vandrovec <vandrove@vc.cvut.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/video/matrox/matroxfb_maven.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff -puN drivers/video/matrox/matroxfb_maven.c~drivers-video-matrox-matroxfb_mavenc-fix-unsigned-return-type drivers/video/matrox/matroxfb_maven.c
--- a/drivers/video/matrox/matroxfb_maven.c~drivers-video-matrox-matroxfb_mavenc-fix-unsigned-return-type
+++ a/drivers/video/matrox/matroxfb_maven.c
@@ -280,7 +280,7 @@ static int matroxfb_PLL_mavenclock(const
 	return fxtal * (*feed) / (*in) * ctl->den;
 }
 
-static unsigned int matroxfb_mavenclock(const struct matrox_pll_ctl* ctl,
+static int matroxfb_mavenclock(const struct matrox_pll_ctl *ctl,
 		unsigned int htotal, unsigned int vtotal,
 		unsigned int* in, unsigned int* feed, unsigned int* post,
 		unsigned int* htotal2) {
_

Patches currently in -mm which might be from julia@diku.dk are

linux-next.patch
drivers-mmc-host-imxmmcc-adjust-confusing-if-indentation.patch
fs-btrfs-use-memdup_user.patch
fs-btrfs-use-err_cast.patch
drivers-video-matrox-matroxfb_mavenc-fix-unsigned-return-type.patch
arch-x86-kernel-cpu-cpufreq-fix-unsigned-return-type.patch
net-9p-trans_fdc-fix-unsigned-return-type.patch
drivers-i2c-busses-i2c-pasemic-fix-unsigned-return-type.patch
drivers-atm-firestreamc-fix-unsigned-return-type.patch
drivers-net-wireless-iwlwifi-iwl-agnc-fix-return-value-from-an-unsigned-function.patch