media: dvb-frontends: delete jump targets

* Return directly after a call of the function "kzalloc" failed
  at the beginning.

* Move a bit of exception handling code into an if branch.

* Delete jump targets which became unnecessary with this refactoring.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Hans Verkuil <hansverk@cisco.com>

4 files changed, 14 insertions, 29 deletions

diff --git a/drivers/media/dvb-frontends/cx24113.c b/drivers/media/dvb-frontends/cx24113.c
index 2c5502cab5e1..ee1f704f81f2 100644
--- a/drivers/media/dvb-frontends/cx24113.c
+++ b/drivers/media/dvb-frontends/cx24113.c
@@ -556,7 +556,7 @@ struct dvb_frontend *cx24113_attach(struct dvb_frontend *fe,
 	int rc;
 
 	if (!state)
-		goto error;
+		return NULL;
 
 	/* setup the state */
 	state->config = config;
diff --git a/drivers/media/dvb-frontends/cx24116.c b/drivers/media/dvb-frontends/cx24116.c
index 531c5861a27e..8fb3f095e21c 100644
--- a/drivers/media/dvb-frontends/cx24116.c
+++ b/drivers/media/dvb-frontends/cx24116.c
@@ -226,10 +226,8 @@ static int cx24116_writeregN(struct cx24116_state *state, int reg,
 	u8 *buf;
 
 	buf = kmalloc(len + 1, GFP_KERNEL);
-	if (buf == NULL) {
-		ret = -ENOMEM;
-		goto error;
-	}
+	if (!buf)
+		return -ENOMEM;
 
 	*(buf) = reg;
 	memcpy(buf + 1, data, len);
@@ -250,7 +248,6 @@ static int cx24116_writeregN(struct cx24116_state *state, int reg,
 		ret = -EREMOTEIO;
 	}
 
-error:
 	kfree(buf);
 
 	return ret;
@@ -1128,7 +1125,7 @@ struct dvb_frontend *cx24116_attach(const struct cx24116_config *config,
 	/* allocate memory for the internal state */
 	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (state == NULL)
-		goto error1;
+		return NULL;
 
 	state->config = config;
 	state->i2c = i2c;
@@ -1137,8 +1134,9 @@ struct dvb_frontend *cx24116_attach(const struct cx24116_config *config,
 	ret = (cx24116_readreg(state, 0xFF) << 8) |
 		cx24116_readreg(state, 0xFE);
 	if (ret != 0x0501) {
+		kfree(state);
 		printk(KERN_INFO "Invalid probe, probably not a CX24116 device\n");
-		goto error2;
+		return NULL;
 	}
 
 	/* create dvb_frontend */
@@ -1146,9 +1144,6 @@ struct dvb_frontend *cx24116_attach(const struct cx24116_config *config,
 		sizeof(struct dvb_frontend_ops));
 	state->frontend.demodulator_priv = state;
 	return &state->frontend;
-
-error2: kfree(state);
-error1: return NULL;
 }
 EXPORT_SYMBOL(cx24116_attach);
 
diff --git a/drivers/media/dvb-frontends/ds3000.c b/drivers/media/dvb-frontends/ds3000.c
index 3e347d03acb3..bd4f8278c906 100644
--- a/drivers/media/dvb-frontends/ds3000.c
+++ b/drivers/media/dvb-frontends/ds3000.c
@@ -841,7 +841,7 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config,
 	/* allocate memory for the internal state */
 	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (!state)
-		goto error2;
+		return NULL;
 
 	state->config = config;
 	state->i2c = i2c;
@@ -850,8 +850,9 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config,
 	/* check if the demod is present */
 	ret = ds3000_readreg(state, 0x00) & 0xfe;
 	if (ret != 0xe0) {
+		kfree(state);
 		printk(KERN_ERR "Invalid probe, probably not a DS3000\n");
-		goto error3;
+		return NULL;
 	}
 
 	printk(KERN_INFO "DS3000 chip version: %d.%d attached.\n",
@@ -869,11 +870,6 @@ struct dvb_frontend *ds3000_attach(const struct ds3000_config *config,
 	 */
 	ds3000_set_voltage(&state->frontend, SEC_VOLTAGE_OFF);
 	return &state->frontend;
-
-error3:
-	kfree(state);
-error2:
-	return NULL;
 }
 EXPORT_SYMBOL(ds3000_attach);
 
diff --git a/drivers/media/dvb-frontends/mb86a20s.c b/drivers/media/dvb-frontends/mb86a20s.c
index ba7a433dd424..bdaf9d235fed 100644
--- a/drivers/media/dvb-frontends/mb86a20s.c
+++ b/drivers/media/dvb-frontends/mb86a20s.c
@@ -2073,7 +2073,7 @@ struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
 	/* allocate memory for the internal state */
 	state = kzalloc(sizeof(*state), GFP_KERNEL);
 	if (!state)
-		goto error;
+		return NULL;
 
 	/* setup the state */
 	state->config = config;
@@ -2086,22 +2086,16 @@ struct dvb_frontend *mb86a20s_attach(const struct mb86a20s_config *config,
 
 	/* Check if it is a mb86a20s frontend */
 	rev = mb86a20s_readreg(state, 0);
-
-	if (rev == 0x13) {
-		dev_info(&i2c->dev,
-			 "Detected a Fujitsu mb86a20s frontend\n");
-	} else {
+	if (rev != 0x13) {
+		kfree(state);
 		dev_dbg(&i2c->dev,
 			"Frontend revision %d is unknown - aborting.\n",
 		       rev);
-		goto error;
+		return NULL;
 	}
 
+	dev_info(&i2c->dev, "Detected a Fujitsu mb86a20s frontend\n");
 	return &state->frontend;
-
-error:
-	kfree(state);
-	return NULL;
 }
 EXPORT_SYMBOL(mb86a20s_attach);