linux-kernel - [PATCH] staging: comedi: adl_pci9118: Delete an unnecessary check before the function call "pci_dev

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Date:	Sat, 27 Jun 2015 14:10:34 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	H Hartley Sweeten <hsweeten@...ionengravers.com>,
	Ian Abbott <abbotti@....co.uk>, devel@...verdev.osuosl.org
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] staging: comedi: adl_pci9118: Delete an unnecessary check
 before the function call "pci_dev_put"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 27 Jun 2015 13:50:43 +0200

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>
---
 drivers/staging/comedi/drivers/adl_pci9118.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/staging/comedi/drivers/adl_pci9118.c b/drivers/staging/comedi/drivers/adl_pci9118.c
index fb3043d..19b5806 100644
--- a/drivers/staging/comedi/drivers/adl_pci9118.c
+++ b/drivers/staging/comedi/drivers/adl_pci9118.c
@@ -1717,8 +1717,7 @@ static void pci9118_detach(struct comedi_device *dev)
 		pci9118_reset(dev);
 	comedi_pci_detach(dev);
 	pci9118_free_dma(dev);
-	if (pcidev)
-		pci_dev_put(pcidev);
+	pci_dev_put(pcidev);
 }
 
 static struct comedi_driver adl_pci9118_driver = {
-- 
2.4.4

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