[media] drivers/media/dvb-frontends/lg2160.c: Removes useless kfree()

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@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/dvb-frontends/lg2160.c b/drivers/media/dvb-frontends/lg2160.c
index cc11260e99df96f7ce19837e6ba268811aa825cf..5fd14f840ab0ffcd38cc32656a24fae3684c62c0 100644 (file)
--- a/drivers/media/dvb-frontends/lg2160.c
+++ b/drivers/media/dvb-frontends/lg2160.c
@@ -1421,8 +1421,8 @@ struct dvb_frontend *lg2160_attach(const struct lg2160_config *config,
               config ? config->i2c_addr : 0);
 
        state = kzalloc(sizeof(struct lg216x_state), GFP_KERNEL);
-       if (state == NULL)
-               goto fail;
+       if (!state)
+               return NULL;
 
        state->cfg = config;
        state->i2c_adap = i2c_adap;
@@ -1449,10 +1449,6 @@ struct dvb_frontend *lg2160_attach(const struct lg2160_config *config,
        state->frontend.dtv_property_cache.atscmh_parade_id = 1;
 
        return &state->frontend;
-fail:
-       lg_warn("unable to detect LG216x hardware\n");
-       kfree(state);
-       return NULL;
 }
 EXPORT_SYMBOL(lg2160_attach);