From 47aab4ab20259526419712df4c5d98b914d968dc Mon Sep 17 00:00:00 2001 From: Peter Senna Tschudin Date: Wed, 12 Sep 2012 08:56:02 -0300 Subject: [PATCH] [media] drivers/media/dvb-frontends/s5h1432.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/) // @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); // Signed-off-by: Peter Senna Tschudin Signed-off-by: Mauro Carvalho Chehab --- drivers/media/dvb-frontends/s5h1432.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-) diff --git a/drivers/media/dvb-frontends/s5h1432.c b/drivers/media/dvb-frontends/s5h1432.c index 8352ce1c9556..6ec16a243741 100644 --- a/drivers/media/dvb-frontends/s5h1432.c +++ b/drivers/media/dvb-frontends/s5h1432.c @@ -351,8 +351,8 @@ struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config, printk(KERN_INFO " Enter s5h1432_attach(). attach success!\n"); /* allocate memory for the internal state */ state = kmalloc(sizeof(struct s5h1432_state), GFP_KERNEL); - if (state == NULL) - goto error; + if (!state) + return NULL; /* setup the state */ state->config = config; @@ -367,10 +367,6 @@ struct dvb_frontend *s5h1432_attach(const struct s5h1432_config *config, state->frontend.demodulator_priv = state; return &state->frontend; - -error: - kfree(state); - return NULL; } EXPORT_SYMBOL(s5h1432_attach); -- 2.20.1