linux-kernel - [PATCH] x86: Intel-perf_event: Delete an unnecessary check before the function call "pci_dev

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Message-ID: <54D0B59C.2060106@users.sourceforge.net>
Date:	Tue, 03 Feb 2015 12:48:44 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	Paul Mackerras <paulus@...ba.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] x86: Intel-perf_event: Delete an unnecessary check before
 the function call "pci_dev_put"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 3 Feb 2015 12:40:54 +0100

The pci_dev_put() 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>
---
 arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
index 21af6149e..12d9548 100644
--- a/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
+++ b/arch/x86/kernel/cpu/perf_event_intel_uncore_snbep.c
@@ -1132,8 +1132,7 @@ static int snbep_pci2phy_map_init(int devid)
 		}
 	}
 
-	if (ubox_dev)
-		pci_dev_put(ubox_dev);
+	pci_dev_put(ubox_dev);
 
 	return err ? pcibios_err_to_errno(err) : 0;
 }
-- 
2.2.2

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