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/lg2160.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/media/dvb-frontends/lg2160.c b/drivers/media/dvb-frontends/lg2160.c index cc11260..5fd14f8 100644 --- 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); -- 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
