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/tda665x.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/media/dvb-frontends/tda665x.c b/drivers/media/dvb-frontends/tda665x.c index 2c1c759..63cc123 100644 --- a/drivers/media/dvb-frontends/tda665x.c +++ b/drivers/media/dvb-frontends/tda665x.c @@ -228,8 +228,8 @@ struct dvb_frontend *tda665x_attach(struct dvb_frontend *fe, struct dvb_tuner_info *info; state = kzalloc(sizeof(struct tda665x_state), GFP_KERNEL); - if (state == NULL) - goto exit; + if (!state) + return NULL; state->config = config; state->i2c = i2c; @@ -246,10 +246,6 @@ struct dvb_frontend *tda665x_attach(struct dvb_frontend *fe, printk(KERN_DEBUG "%s: Attaching TDA665x (%s) tuner\n", __func__, info->name); return fe; - -exit: - kfree(state); - return NULL; } EXPORT_SYMBOL(tda665x_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
