switch: fix some memory leaks in switch_parse_vlan()

SVN-Revision: 29936

package/switch/src/switch-adm.c

@@ -341,6 +341,7 @@ static int handle_vlan_port_write(void *driver, char *buf, int nr)
 	}
 	adm_wreg(0x13 + nr, (__u16) ports);
 
+	kfree(c);
 	return 0;
 }
 

package/switch/src/switch-core.c

@@ -341,10 +341,9 @@ switch_vlan_config *switch_parse_vlan(switch_driver *driver, char *buf)
 	switch_vlan_config *c;
 	int j, u, p, s;
 
-	c = kmalloc(sizeof(switch_vlan_config), GFP_KERNEL);
+	c = kzalloc(sizeof(switch_vlan_config), GFP_KERNEL);
 	if (!c)
 		return NULL;
-	memset(c, 0, sizeof(switch_vlan_config));
 
 	while (isspace(*buf)) buf++;
 	j = 0;
@@ -382,7 +381,10 @@ switch_vlan_config *switch_parse_vlan(switch_driver *driver, char *buf)
 
 		while (isspace(*buf)) buf++;
 	}
-	if (*buf != 0) return NULL;
+	if (*buf != 0) {
+		kfree(c);
+		return NULL;
+	}
 
 	c->port &= (1 << driver->ports) - 1;
 	c->untag &= (1 << driver->ports) - 1;

package/switch/src/switch-robo.c

@@ -459,6 +459,7 @@ static int handle_vlan_port_write(void *driver, char *buf, int nr)
 		robo_write32(ROBO_ARLIO_PAGE, 0x63 + regoff, (c->untag << 9) | c->port);
 		robo_write16(ROBO_ARLIO_PAGE, 0x61 + regoff, nr);
 		robo_write16(ROBO_ARLIO_PAGE, 0x60 + regoff, 1 << 7);
+		kfree(c);
 		return 0;
 	}
 
@@ -473,6 +474,7 @@ static int handle_vlan_port_write(void *driver, char *buf, int nr)
 		robo_write16(ROBO_VLAN_PAGE, ROBO_VLAN_TABLE_ACCESS, val16);
 	}
 
+	kfree(c);
 	return 0;
 }
 
@@ -520,13 +522,9 @@ static int handle_enable_vlan_write(void *driver, char *buf, int nr)
 static int handle_reset(void *driver, char *buf, int nr)
 {
 	switch_driver *d = (switch_driver *) driver;
-	switch_vlan_config *c = switch_parse_vlan(d, buf);
 	int j;
 	__u16 val16;
 
-	if (c == NULL)
-		return -EINVAL;
-
 	/* disable switching */
 	set_switch(0);