[PATCH] nl802154: Improve unlocking of a table in four functions

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Wed, 8 Nov 2017 17:08:55 +0100

* Add jump targets so that a call of the function "rdev_unlock_llsec_table"
  is stored only once in these function implementations.

* Replace four calls by goto statements.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 net/ieee802154/nl802154.c | 24 ++++++++++++------------
 1 file changed, 12 insertions(+), 12 deletions(-)

diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c
index 99f6c254ea77..33865d355433 100644
--- a/net/ieee802154/nl802154.c
+++ b/net/ieee802154/nl802154.c
@@ -1527,16 +1527,16 @@ nl802154_dump_llsec_key(struct sk_buff *skb, struct 
netlink_callback *cb)
                                      rdev, wpan_dev->netdev, key) < 0) {
                        /* TODO */
                        err = -EIO;
-                       rdev_unlock_llsec_table(rdev, wpan_dev);
-                       goto out_err;
+                       goto unlock_table;
                }
        }
 
        cb->args[2] = 1;
 
 out:
-       rdev_unlock_llsec_table(rdev, wpan_dev);
        err = skb->len;
+unlock_table:
+       rdev_unlock_llsec_table(rdev, wpan_dev);
 out_err:
        nl802154_finish_wpan_dev_dump(rdev);
 
@@ -1697,16 +1697,16 @@ nl802154_dump_llsec_dev(struct sk_buff *skb, struct 
netlink_callback *cb)
                                         rdev, wpan_dev->netdev, dev) < 0) {
                        /* TODO */
                        err = -EIO;
-                       rdev_unlock_llsec_table(rdev, wpan_dev);
-                       goto out_err;
+                       goto unlock_table;
                }
        }
 
        cb->args[2] = 1;
 
 out:
-       rdev_unlock_llsec_table(rdev, wpan_dev);
        err = skb->len;
+unlock_table:
+       rdev_unlock_llsec_table(rdev, wpan_dev);
 out_err:
        nl802154_finish_wpan_dev_dump(rdev);
 
@@ -1875,8 +1875,7 @@ nl802154_dump_llsec_devkey(struct sk_buff *skb, struct 
netlink_callback *cb)
                                                 kpos) < 0) {
                                /* TODO */
                                err = -EIO;
-                               rdev_unlock_llsec_table(rdev, wpan_dev);
-                               goto out_err;
+                               goto unlock_table;
                        }
                }
        }
@@ -1884,8 +1883,9 @@ nl802154_dump_llsec_devkey(struct sk_buff *skb, struct 
netlink_callback *cb)
        cb->args[2] = 1;
 
 out:
-       rdev_unlock_llsec_table(rdev, wpan_dev);
        err = skb->len;
+unlock_table:
+       rdev_unlock_llsec_table(rdev, wpan_dev);
 out_err:
        nl802154_finish_wpan_dev_dump(rdev);
 
@@ -2034,16 +2034,16 @@ nl802154_dump_llsec_seclevel(struct sk_buff *skb, 
struct netlink_callback *cb)
                                           rdev, wpan_dev->netdev, sl) < 0) {
                        /* TODO */
                        err = -EIO;
-                       rdev_unlock_llsec_table(rdev, wpan_dev);
-                       goto out_err;
+                       goto unlock_table;
                }
        }
 
        cb->args[2] = 1;
 
 out:
-       rdev_unlock_llsec_table(rdev, wpan_dev);
        err = skb->len;
+unlock_table:
+       rdev_unlock_llsec_table(rdev, wpan_dev);
 out_err:
        nl802154_finish_wpan_dev_dump(rdev);
 
-- 
2.15.0