diff mbox

[iproute2] devlink: Convert conditional in dl_argv_handle_port() to switch()

Message ID 1475979258-29222-1-git-send-email-liuhangbin@gmail.com
State Accepted, archived
Delegated to: stephen hemminger
Headers show

Commit Message

Hangbin Liu Oct. 9, 2016, 2:14 a.m. UTC
Discovered by Phil's covscan. The final return statement is never reached.
This is not inherently clear from looking at the code, so change the
conditional to a switch() statement which should clarify this.

CC: Phil Sutter <phil@nwl.cc>
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
---
 devlink/devlink.c | 17 ++++++++---------
 1 file changed, 8 insertions(+), 9 deletions(-)

Comments

Phil Sutter Oct. 9, 2016, 9:10 a.m. UTC | #1
On Sun, Oct 09, 2016 at 10:14:18AM +0800, Hangbin Liu wrote:
> Discovered by Phil's covscan. The final return statement is never reached.
> This is not inherently clear from looking at the code, so change the
> conditional to a switch() statement which should clarify this.
> 
> CC: Phil Sutter <phil@nwl.cc>
> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>

Acked-by: Phil Sutter <phil@nwl.cc>
Stephen Hemminger Oct. 17, 2016, 12:31 p.m. UTC | #2
On Sun,  9 Oct 2016 10:14:18 +0800
Hangbin Liu <liuhangbin@gmail.com> wrote:

> Discovered by Phil's covscan. The final return statement is never reached.
> This is not inherently clear from looking at the code, so change the
> conditional to a switch() statement which should clarify this.
> 
> CC: Phil Sutter <phil@nwl.cc>
> Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>

Applied thanks
diff mbox

Patch

diff --git a/devlink/devlink.c b/devlink/devlink.c
index e91dc50..ccca0fb 100644
--- a/devlink/devlink.c
+++ b/devlink/devlink.c
@@ -524,19 +524,18 @@  static int dl_argv_handle_port(struct dl *dl, char **p_bus_name,
 		return -EINVAL;
 	}
 	slash_count = strslashcount(str);
-	if (slash_count != 2 && slash_count != 0) {
+	switch (slash_count) {
+	case 0:
+		return __dl_argv_handle_port_ifname(dl, str, p_bus_name,
+						    p_dev_name, p_port_index);
+	case 2:
+		return __dl_argv_handle_port(str, p_bus_name,
+					     p_dev_name, p_port_index);
+	default:
 		pr_err("Wrong port identification string format.\n");
 		pr_err("Expected \"bus_name/dev_name/port_index\" or \"netdev_ifname\".\n");
 		return -EINVAL;
 	}
-	if (slash_count == 2) {
-		return __dl_argv_handle_port(str, p_bus_name,
-					     p_dev_name, p_port_index);
-	} else if (slash_count == 0) {
-		return __dl_argv_handle_port_ifname(dl, str, p_bus_name,
-						    p_dev_name, p_port_index);
-	}
-	return 0;
 }
 
 static int dl_argv_handle_both(struct dl *dl, char **p_bus_name,