From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754241AbYDWQvj (ORCPT ); Wed, 23 Apr 2008 12:51:39 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751939AbYDWQv3 (ORCPT ); Wed, 23 Apr 2008 12:51:29 -0400 Received: from smtp-out2.tiscali.nl ([195.241.79.177]:34399 "EHLO smtp-out2.tiscali.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751884AbYDWQv3 (ORCPT ); Wed, 23 Apr 2008 12:51:29 -0400 Message-ID: <480F6905.3070808@tiscali.nl> Date: Wed, 23 Apr 2008 18:51:17 +0200 From: Roel Kluin <12o3l@tiscali.nl> User-Agent: Thunderbird 2.0.0.9 (X11/20071031) MIME-Version: 1.0 To: paulus@samba.org, linuxppc-dev@ozlabs.org CC: lkml Subject: [PATCH] powerpc: mpic_pasemi_msi: failed allocation unnoticed Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org bitmap_find_free_region(), called by mpic_msi_alloc_hwirqs() may return -ENOMEM, but hwirq of type irq_hw_number_t which is unsigned. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> --- The functions can be found respectively in: //---[ vi lib/bitmap.c +807 ]--- //---[ vi arch/powerpc/sysdev/mpic_msi.c +39 ]--- diff --git a/arch/powerpc/sysdev/mpic_pasemi_msi.c b/arch/powerpc/sysdev/mpic_pasemi_msi.c index 33cbfb2..a15ac5c 100644 --- a/arch/powerpc/sysdev/mpic_pasemi_msi.c +++ b/arch/powerpc/sysdev/mpic_pasemi_msi.c @@ -109,7 +109,7 @@ static int pasemi_msi_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type) * sources can be changed independently. */ hwirq = mpic_msi_alloc_hwirqs(msi_mpic, ALLOC_CHUNK); - if (hwirq < 0) { + if (hwirq == -ENOMEM) { pr_debug("pasemi_msi: failed allocating hwirq\n"); return hwirq; }