Am 12.09.2012 17:06, schrieb Peter Senna Tschudin: > From: Peter Senna Tschudin <peter.senna@xxxxxxxxx> > > Remove useless kfree() and clean up code related to the removal. > > The semantic patch that finds this problem is as follows: > (http://coccinelle.lip6.fr/) > > // <smpl> > @r exists@ > position p1,p2; > expression x; > @@ > > if (x@p1 == NULL) { ... kfree@p2(x); ... return ...; } > > @unchanged exists@ > position r.p1,r.p2; > expression e <= r.x,x,e1; > iterator I; > statement S; > @@ > > if (x@p1 == NULL) { ... when != I(x,...) S > when != e = e1 > when != e += e1 > when != e -= e1 > when != ++e > when != --e > when != e++ > when != e-- > when != &e > kfree@p2(x); ... return ...; } > > @ok depends on unchanged exists@ > position any r.p1; > position r.p2; > expression x; > @@ > > ... when != true x@p1 == NULL > kfree@p2(x); > > @depends on !ok && unchanged@ > position r.p2; > expression x; > @@ > > *kfree@p2(x); > // </smpl> > > Signed-off-by: Peter Senna Tschudin <peter.senna@xxxxxxxxx> > > --- > drivers/block/aoe/aoecmd.c | 1 - > 1 file changed, 1 deletion(-) > > diff --git a/drivers/block/aoe/aoecmd.c b/drivers/block/aoe/aoecmd.c > index 5461faa..cbb0521 100644 > --- a/drivers/block/aoe/aoecmd.c > +++ b/drivers/block/aoe/aoecmd.c > @@ -1257,7 +1257,6 @@ addtgt(struct aoedev *d, char *addr, ulong nframes) > } > t = kcalloc(1, sizeof *t, GFP_ATOMIC); > if (!t) { > - kfree(t); > printk(KERN_INFO "aoe: cannot allocate memory to add target\n"); > return NULL; > } > this should read kzalloc(sizeof (*t), GFP_ATOMIC); see: [PATCH 3/9] drivers/gpu/drm/ttm/ttm_page_alloc_dma.c: Remove useless kfree re, wh > -- > To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
