diff options
| author | Peter Senna Tschudin <peter.senna@gmail.com> | 2012-09-12 08:56:04 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-10-06 11:07:34 -0300 |
| commit | 3f037426d61027d40063a1fc2d00a08154c7c187 (patch) | |
| tree | b68d4ecba154ba99428653826e1ad56ef5ef1fd0 /drivers/media | |
| parent | 5f49908adb1ff4f0cec429923f1f49e79f318812 (diff) | |
| download | linux-3f037426d61027d40063a1fc2d00a08154c7c187.tar.bz2 | |
[media] drivers/media/dvb-frontends/dvb_dummy_fe.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>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb-frontends/dvb_dummy_fe.c | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/drivers/media/dvb-frontends/dvb_dummy_fe.c b/drivers/media/dvb-frontends/dvb_dummy_fe.c index dcfc902c8678..d5acc304786b 100644 --- a/drivers/media/dvb-frontends/dvb_dummy_fe.c +++ b/drivers/media/dvb-frontends/dvb_dummy_fe.c @@ -121,16 +121,13 @@ struct dvb_frontend* dvb_dummy_fe_ofdm_attach(void) /* allocate memory for the internal state */ state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); - if (state == NULL) goto error; + if (!state) + return NULL; /* create dvb_frontend */ memcpy(&state->frontend.ops, &dvb_dummy_fe_ofdm_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; return &state->frontend; - -error: - kfree(state); - return NULL; } static struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops; @@ -141,16 +138,13 @@ struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void) /* allocate memory for the internal state */ state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); - if (state == NULL) goto error; + if (!state) + return NULL; /* create dvb_frontend */ memcpy(&state->frontend.ops, &dvb_dummy_fe_qpsk_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; return &state->frontend; - -error: - kfree(state); - return NULL; } static struct dvb_frontend_ops dvb_dummy_fe_qam_ops; @@ -161,16 +155,13 @@ struct dvb_frontend *dvb_dummy_fe_qam_attach(void) /* allocate memory for the internal state */ state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL); - if (state == NULL) goto error; + if (!state) + return NULL; /* create dvb_frontend */ memcpy(&state->frontend.ops, &dvb_dummy_fe_qam_ops, sizeof(struct dvb_frontend_ops)); state->frontend.demodulator_priv = state; return &state->frontend; - -error: - kfree(state); - return NULL; } static struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = { |