linux-kernel - [PATCH 1/1] ARM: OMAP2: Deletion of unnecessary checks before three function calls

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Date:	Sat, 22 Nov 2014 11:00:35 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Benoît Cousson <bcousson@...libre.com>,
	Paul Walmsley <paul@...an.com>,
	Russell King <linux@....linux.org.uk>,
	Tony Lindgren <tony@...mide.com>,
	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/1] ARM: OMAP2: Deletion of unnecessary checks before three
 function calls

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 22 Nov 2014 10:50:33 +0100

The functions clk_disable(), of_node_put() and omap_device_delete() test
whether their argument is NULL and then return 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>
---
 arch/arm/mach-omap2/omap_device.c | 3 +--
 arch/arm/mach-omap2/omap_hwmod.c  | 3 +--
 arch/arm/mach-omap2/timer.c       | 3 +--
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/arch/arm/mach-omap2/omap_device.c b/arch/arm/mach-omap2/omap_device.c
index d22c30d..5108859 100644
--- a/arch/arm/mach-omap2/omap_device.c
+++ b/arch/arm/mach-omap2/omap_device.c
@@ -199,8 +199,7 @@ static int _omap_device_notifier_call(struct notifier_block *nb,
 
 	switch (event) {
 	case BUS_NOTIFY_DEL_DEVICE:
-		if (pdev->archdata.od)
-			omap_device_delete(pdev->archdata.od);
+		omap_device_delete(pdev->archdata.od);
 		break;
 	case BUS_NOTIFY_ADD_DEVICE:
 		if (pdev->dev.of_node)
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 9e91a4e..e2406c4 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -917,8 +917,7 @@ static int _disable_clocks(struct omap_hwmod *oh)
 
 	pr_debug("omap_hwmod: %s: disabling clocks\n", oh->name);
 
-	if (oh->_clk)
-		clk_disable(oh->_clk);
+	clk_disable(oh->_clk);
 
 	p = oh->slave_ports.next;
 
diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c
index 43d03fb..5b428a0 100644
--- a/arch/arm/mach-omap2/timer.c
+++ b/arch/arm/mach-omap2/timer.c
@@ -205,8 +205,7 @@ static void __init omap_dmtimer_init(void)
 	/* If we are a secure device, remove any secure timer nodes */
 	if ((omap_type() != OMAP2_DEVICE_TYPE_GP)) {
 		np = omap_get_timer_dt(omap_timer_match, "ti,timer-secure");
-		if (np)
-			of_node_put(np);
+		of_node_put(np);
 	}
 }
 
-- 
2.1.3

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