From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752147AbZHIKqT (ORCPT ); Sun, 9 Aug 2009 06:46:19 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751499AbZHIKqT (ORCPT ); Sun, 9 Aug 2009 06:46:19 -0400 Received: from hera.kernel.org ([140.211.167.34]:56309 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751369AbZHIKqR (ORCPT ); Sun, 9 Aug 2009 06:46:17 -0400 Date: Sun, 9 Aug 2009 10:45:42 GMT From: tip-bot for Bartlomiej Zolnierkiewicz To: linux-tip-commits@vger.kernel.org Cc: linux-kernel@vger.kernel.org, julia@diku.dk, hpa@zytor.com, mingo@redhat.com, bzolnier@gmail.com, eteo@redhat.com, corbet@lwn.net, error27@gmail.com, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, julia@diku.dk, linux-kernel@vger.kernel.org, bzolnier@gmail.com, eteo@redhat.com, corbet@lwn.net, error27@gmail.com, tglx@linutronix.de, mingo@elte.hu In-Reply-To: <200908062146.03638.bzolnier@gmail.com> References: <200908062146.03638.bzolnier@gmail.com> Subject: [tip:irq/core] irq: Remove superfluous NULL pointer check in check_irq_resend() Message-ID: Git-Commit-ID: c36ba80ea01d0aecb652c26799a912e760ce8981 X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.0 (hera.kernel.org [127.0.0.1]); Sun, 09 Aug 2009 10:45:43 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: c36ba80ea01d0aecb652c26799a912e760ce8981 Gitweb: http://git.kernel.org/tip/c36ba80ea01d0aecb652c26799a912e760ce8981 Author: Bartlomiej Zolnierkiewicz AuthorDate: Thu, 6 Aug 2009 21:46:03 +0200 Committer: Ingo Molnar CommitDate: Sun, 9 Aug 2009 12:44:29 +0200 irq: Remove superfluous NULL pointer check in check_irq_resend() This takes care of the following entry from Dan's list: kernel/irq/resend.c +73 check_irq_resend(17) warning: variable derefenced before check 'desc->chip' Reported-by: Dan Carpenter Signed-off-by: Bartlomiej Zolnierkiewicz Cc: Jonathan Corbet Cc: Eugene Teo Cc: Julia Lawall LKML-Reference: <200908062146.03638.bzolnier@gmail.com> Signed-off-by: Ingo Molnar --- kernel/irq/resend.c | 3 +-- 1 files changed, 1 insertions(+), 2 deletions(-) diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c index 89c7117..090c376 100644 --- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -70,8 +70,7 @@ void check_irq_resend(struct irq_desc *desc, unsigned int irq) if ((status & (IRQ_LEVEL | IRQ_PENDING | IRQ_REPLAY)) == IRQ_PENDING) { desc->status = (status & ~IRQ_PENDING) | IRQ_REPLAY; - if (!desc->chip || !desc->chip->retrigger || - !desc->chip->retrigger(irq)) { + if (!desc->chip->retrigger || !desc->chip->retrigger(irq)) { #ifdef CONFIG_HARDIRQS_SW_RESEND /* Set it pending and activate the softirq: */ set_bit(irq, irqs_resend);