linux-kernel - [PATCH 5/8] staging: et131x: Remove useless return variables

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Date:	Tue, 20 May 2014 12:33:45 +0200
From:	Peter Senna Tschudin <peter.senna@...il.com>
To:	Mark Einon <mark.einon@...il.com>
Cc:	kernel-janitors@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH 5/8] staging: et131x: Remove useless return variables

This patch remove variables that are initialized with a constant,
are never updated, and are only used as parameter of return.
Return the constant instead of using a variable.

Verified by compilation only.

The coccinelle script that find and fixes this issue is:
// <smpl>
@@
type T;
constant C;
identifier ret;
@@
- T ret = C;
... when != ret
- return ret;
+ return C;
// </smpl>

Signed-off-by: Peter Senna Tschudin <peter.senna@...il.com>

---
 drivers/staging/et131x/et131x.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/et131x/et131x.c b/drivers/staging/et131x/et131x.c
index 15e0f4d..845aecd 100644
--- a/drivers/staging/et131x/et131x.c
+++ b/drivers/staging/et131x/et131x.c
@@ -4237,7 +4237,6 @@ static int et131x_ioctl(struct net_device *netdev, struct ifreq *reqbuf,
 static int et131x_set_packet_filter(struct et131x_adapter *adapter)
 {
 	int filter = adapter->packet_filter;
-	int status = 0;
 	u32 ctrl;
 	u32 pf_ctrl;
 
@@ -4288,7 +4287,7 @@ static int et131x_set_packet_filter(struct et131x_adapter *adapter)
 		writel(pf_ctrl, &adapter->regs->rxmac.pf_ctrl);
 		writel(ctrl, &adapter->regs->rxmac.ctrl);
 	}
-	return status;
+	return 0;
 }
 
 /* et131x_multicast - The handler to configure multicasting on the interface */

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