linux-kernel - [PATCH 1/1] staging: ozwpan: Deletion of unnecessary checks before the function call "oz_free_urb

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Date:	Tue, 25 Nov 2014 16:57:03 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Shigekatsu Tateno <shigekatsu.tateno@...el.com>,
	devel@...verdev.osuosl.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/1] staging: ozwpan: Deletion of unnecessary checks before
 the function call "oz_free_urb_link"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 25 Nov 2014 16:51:08 +0100

The oz_free_urb_link() function tests whether its argument is NULL
and then returns immediately. Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/staging/ozwpan/ozhcd.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/staging/ozwpan/ozhcd.c b/drivers/staging/ozwpan/ozhcd.c
index 30bd928..c9b6d98 100644
--- a/drivers/staging/ozwpan/ozhcd.c
+++ b/drivers/staging/ozwpan/ozhcd.c
@@ -411,8 +411,7 @@ static void oz_complete_urb(struct usb_hcd *hcd, struct urb *urb,
 	}
 	spin_lock(&g_tasklet_lock);
 	spin_unlock_irqrestore(&g_tasklet_lock, irq_state);
-	if (cancel_urbl)
-		oz_free_urb_link(cancel_urbl);
+	oz_free_urb_link(cancel_urbl);
 }
 
 /*
@@ -581,8 +580,7 @@ static int oz_dequeue_ep_urb(struct oz_port *port, u8 ep_addr, int in_dir,
 		}
 	}
 	spin_unlock_bh(&port->ozhcd->hcd_lock);
-	if (urbl)
-		oz_free_urb_link(urbl);
+	oz_free_urb_link(urbl);
 	return urbl ? 0 : -EIDRM;
 }
 
-- 
2.1.3

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