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| author | Peter Senna Tschudin <peter.senna@gmail.com> | 2012-09-12 08:56:01 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-10-06 11:13:35 -0300 |
| commit | 4a0543ee8d17515420d9133c0e733298d1658523 (patch) | |
| tree | 1223e8dc4d60341b5d64cb6944a1294adf3624d7 /drivers/media | |
| parent | 47aab4ab20259526419712df4c5d98b914d968dc (diff) | |
| download | linux-4a0543ee8d17515420d9133c0e733298d1658523.tar.bz2 | |
[media] drivers/media/dvb-frontends/s921.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/s921.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/media/dvb-frontends/s921.c b/drivers/media/dvb-frontends/s921.c index cd2288c07147..a271ac3eaec0 100644 --- a/drivers/media/dvb-frontends/s921.c +++ b/drivers/media/dvb-frontends/s921.c @@ -487,9 +487,9 @@ struct dvb_frontend *s921_attach(const struct s921_config *config, kzalloc(sizeof(struct s921_state), GFP_KERNEL); dprintk("\n"); - if (state == NULL) { + if (!state) { rc("Unable to kzalloc\n"); - goto rcor; + return NULL; } /* setup the state */ @@ -502,11 +502,6 @@ struct dvb_frontend *s921_attach(const struct s921_config *config, state->frontend.demodulator_priv = state; return &state->frontend; - -rcor: - kfree(state); - - return NULL; } EXPORT_SYMBOL(s921_attach); |