linux-kernel - [PATCH 25/44] kdbus: Cleanup kdbus_cmd_conn

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Date:	Thu,  8 Oct 2015 14:31:54 +0300
From:	Sergei Zviagintsev <sergei@...v.net>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Daniel Mack <daniel@...que.org>,
	David Herrmann <dh.herrmann@...glemail.com>,
	Djalal Harouni <tixxdz@...ndz.org>
Cc:	linux-kernel@...r.kernel.org, Sergei Zviagintsev <sergei@...v.net>
Subject: [PATCH 25/44] kdbus: Cleanup kdbus_cmd_conn_info()

 - Move `entry' and `owner' to the scope where they are used. Drop
   redundand initialization of `entry'. Use conditional operator to set
   the value of `owner'.

 - Set `ret' to zero right after call to kdbus_pool_slice_copy_kvec(),
   not in the end of function.

 - Remove redundant goto.

Signed-off-by: Sergei Zviagintsev <sergei@...v.net>
---
 ipc/kdbus/connection.c | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/ipc/kdbus/connection.c b/ipc/kdbus/connection.c
index b3c5f20a57d8..6a73ac3f444d 100644
--- a/ipc/kdbus/connection.c
+++ b/ipc/kdbus/connection.c
@@ -1702,8 +1702,6 @@ int kdbus_cmd_conn_info(struct kdbus_conn *conn, void __user *argp)
 {
 	struct kdbus_meta_conn *conn_meta = NULL;
 	struct kdbus_pool_slice *slice = NULL;
-	struct kdbus_name_entry *entry = NULL;
-	struct kdbus_name_owner *owner = NULL;
 	struct kdbus_conn *owner_conn = NULL;
 	struct kdbus_item *meta_items = NULL;
 	struct kdbus_info info = {};
@@ -1739,9 +1737,12 @@ int kdbus_cmd_conn_info(struct kdbus_conn *conn, void __user *argp)
 	name = argv[1].item ? argv[1].item->str : NULL;
 
 	if (name) {
+		struct kdbus_name_entry *entry;
+		struct kdbus_name_owner *owner;
+
 		entry = kdbus_name_lookup_unlocked(bus->name_registry, name);
-		if (entry)
-			owner = kdbus_name_get_owner(entry);
+		owner = entry ? kdbus_name_get_owner(entry) : NULL;
+
 		if (!owner ||
 		    !kdbus_conn_policy_see_name(conn, current_cred(), name) ||
 		    (cmd->id != 0 && owner->conn->id != cmd->id)) {
@@ -1804,17 +1805,14 @@ int kdbus_cmd_conn_info(struct kdbus_conn *conn, void __user *argp)
 	ret = kdbus_pool_slice_copy_kvec(slice, 0, kvec, cnt, size);
 	if (ret < 0)
 		goto exit;
+	ret = 0;
 
 	kdbus_pool_slice_publish(slice, &cmd->offset, &cmd->info_size);
 
 	if (kdbus_member_set_user(&cmd->offset, argp, typeof(*cmd), offset) ||
 	    kdbus_member_set_user(&cmd->info_size, argp,
-				  typeof(*cmd), info_size)) {
+				  typeof(*cmd), info_size))
 		ret = -EFAULT;
-		goto exit;
-	}
-
-	ret = 0;
 
 exit:
 	up_read(&bus->name_registry->rwlock);
-- 
1.8.3.1

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