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authorJulia Lawall <julia@diku.dk>2011-02-02 18:13:36 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2011-03-11 14:22:44 +0000
commit3ee7451a023dd197fcfc1ba46dcce6d8ec5e1b78 (patch)
treeb87527fb5eccede4c9236ecd1e521afa1ef02125 /drivers/mtd
parentf17f12ce9dd6ec0a8e1f415ecdbaebfce0207464 (diff)
downloadlinux-3ee7451a023dd197fcfc1ba46dcce6d8ec5e1b78.tar.gz
mtd: ts5500_flash: avoid calling map_destroy on NULL
map_destroy dereferences its argument.  The call is furthermore only
reachable when this argument is NULL.  Thus the call is dropped.

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

// <smpl>
@@
expression *x;
@@

*if (x == NULL)
{ ...
* map_destroy(x);
  ...
  return ...;
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/maps/ts5500_flash.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/mtd/maps/ts5500_flash.c b/drivers/mtd/maps/ts5500_flash.c
index e2147bf11c88..e02dfa9d4ddd 100644
--- a/drivers/mtd/maps/ts5500_flash.c
+++ b/drivers/mtd/maps/ts5500_flash.c
@@ -94,7 +94,6 @@ static int __init init_ts5500_map(void)
 	return 0;
 
 err1:
-	map_destroy(mymtd);
 	iounmap(ts5500_map.virt);
 err2:
 	return rc;