Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758296Ab0KROK1 (ORCPT ); Thu, 18 Nov 2010 09:10:27 -0500 Received: from hera.kernel.org ([140.211.167.34]:41476 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758144Ab0KROKX (ORCPT ); Thu, 18 Nov 2010 09:10:23 -0500 Date: Thu, 18 Nov 2010 14:09:33 GMT From: tip-bot for Sergio Aguirre Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, a.p.zijlstra@chello.nl, schwidefsky@de.ibm.com, kyle@mcmartin.ca, ying.huang@intel.com, saaguirre@ti.com, tglx@linutronix.de, mingo@elte.hu Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, a.p.zijlstra@chello.nl, schwidefsky@de.ibm.com, kyle@mcmartin.ca, ying.huang@intel.com, saaguirre@ti.com, tglx@linutronix.de, mingo@elte.hu In-Reply-To: <1289930567-17828-1-git-send-email-saaguirre@ti.com> References: <1289930567-17828-1-git-send-email-saaguirre@ti.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] irq_work: Drop cmpxchg() result Message-ID: Git-Commit-ID: 94e8ba728640dc01375a14e337f3b892bfacbeeb X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.3 (hera.kernel.org [127.0.0.1]); Thu, 18 Nov 2010 14:09:34 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1716 Lines: 48 Commit-ID: 94e8ba728640dc01375a14e337f3b892bfacbeeb Gitweb: http://git.kernel.org/tip/94e8ba728640dc01375a14e337f3b892bfacbeeb Author: Sergio Aguirre AuthorDate: Tue, 16 Nov 2010 12:02:47 -0600 Committer: Ingo Molnar CommitDate: Thu, 18 Nov 2010 13:18:47 +0100 irq_work: Drop cmpxchg() result The compiler warned us about: kernel/irq_work.c: In function 'irq_work_run': kernel/irq_work.c:148: warning: value computed is not used Dropping the cmpxchg() result is indeed weird, but correct - so annotate away the warning. Signed-off-by: Sergio Aguirre Cc: Huang Ying Cc: Martin Schwidefsky Cc: Kyle McMartin Signed-off-by: Peter Zijlstra LKML-Reference: <1289930567-17828-1-git-send-email-saaguirre@ti.com> Signed-off-by: Ingo Molnar --- kernel/irq_work.c | 4 +++- 1 files changed, 3 insertions(+), 1 deletions(-) diff --git a/kernel/irq_work.c b/kernel/irq_work.c index f16763f..90f8819 100644 --- a/kernel/irq_work.c +++ b/kernel/irq_work.c @@ -145,7 +145,9 @@ void irq_work_run(void) * Clear the BUSY bit and return to the free state if * no-one else claimed it meanwhile. */ - cmpxchg(&entry->next, next_flags(NULL, IRQ_WORK_BUSY), NULL); + (void)cmpxchg(&entry->next, + next_flags(NULL, IRQ_WORK_BUSY), + NULL); } } EXPORT_SYMBOL_GPL(irq_work_run); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/