From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756143Ab0KPSDO (ORCPT ); Tue, 16 Nov 2010 13:03:14 -0500 Received: from arroyo.ext.ti.com ([192.94.94.40]:45175 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754369Ab0KPSDN (ORCPT ); Tue, 16 Nov 2010 13:03:13 -0500 From: Sergio Aguirre To: LKML Cc: Sergio Aguirre , Huang Ying , Martin Schwidefsky , Ingo Molnar , Kyle McMartin , Peter Zijlstra Subject: [RFC][PATCH v2] irq_work: Drop cmpxchg result Date: Tue, 16 Nov 2010 12:02:47 -0600 Message-Id: <1289930567-17828-1-git-send-email-saaguirre@ti.com> X-Mailer: git-send-email 1.7.0.4 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This solves this compilation warning: kernel/irq_work.c: In function 'irq_work_run': kernel/irq_work.c:148: warning: value computed is not used Signed-off-by: Sergio Aguirre Cc: Huang Ying Cc: Martin Schwidefsky Cc: Ingo Molnar Cc: Kyle McMartin Cc: Peter Zijlstra --- Changelog: v2 - Keep ignoring the cmpxchg return value, as pointed out by Peter Zijlstra, and update patch subject/description v1 - Initial version (found here: https://patchwork.kernel.org/patch/328662/) 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); -- 1.7.0.4