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/media/dvb-frontends/s921.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/drivers/media/dvb-frontends/s921.c b/drivers/media/dvb-frontends/s921.c index cd2288c..a271ac3 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); -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
