From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752761AbZG0QQt (ORCPT ); Mon, 27 Jul 2009 12:16:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751524AbZG0QQs (ORCPT ); Mon, 27 Jul 2009 12:16:48 -0400 Received: from mgw2.diku.dk ([130.225.96.92]:40830 "EHLO mgw2.diku.dk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750767AbZG0QQr (ORCPT ); Mon, 27 Jul 2009 12:16:47 -0400 Date: Mon, 27 Jul 2009 18:13:30 +0200 (CEST) From: Julia Lawall To: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org Subject: [PATCH 4/12] drivers/net: Correct redundant test Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Julia Lawall res has already been tested. It seems that this test should be on the recently returned value mmio. A simplified version of the semantic match that finds this problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // @r exists@ local idexpression x; expression E; @@ if (x == NULL || ...) { ... when forall return ...; } ... when != \(x=E\|x--\|x++\|--x\|++x\|x-=E\|x+=E\|x|=E\|x&=E\|&x\) ( *x == NULL | *x != NULL ) // Signed-off-by: Julia Lawall --- drivers/net/ethoc.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/net/ethoc.c b/drivers/net/ethoc.c index ceb6a9c..4dbe5f1 100644 --- a/drivers/net/ethoc.c +++ b/drivers/net/ethoc.c @@ -894,7 +894,7 @@ static int ethoc_probe(struct platform_device *pdev) mmio = devm_request_mem_region(&pdev->dev, res->start, res->end - res->start + 1, res->name); - if (!res) { + if (!mmio) { dev_err(&pdev->dev, "cannot request I/O memory space\n"); ret = -ENXIO; goto free;