From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751195AbZL0Urp (ORCPT ); Sun, 27 Dec 2009 15:47:45 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751126AbZL0Uro (ORCPT ); Sun, 27 Dec 2009 15:47:44 -0500 Received: from mail-ew0-f219.google.com ([209.85.219.219]:34663 "EHLO mail-ew0-f219.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750947AbZL0Uro (ORCPT ); Sun, 27 Dec 2009 15:47:44 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=NbM/uZ9UJPXg4Ax67Xxg+SsYH8D1VgXq/q132SCk0nebDUqnqQwPhyU3K3cidFthT3 VpvtVpS01jerY/vQpJfy86QNbyVfvO5PT3DQMff/LMzO+WZQzmPuf/xXEF5EH4XMI1ms RiRF8m3Akp2mMQySe+lEAubXsa3lX2j+CiWis= Message-ID: <4B37C89B.3030904@gmail.com> Date: Sun, 27 Dec 2009 21:50:35 +0100 From: Roel Kluin User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091209 Fedora/3.0-4.fc12 Thunderbird/3.0 MIME-Version: 1.0 To: Roel Kluin CC: Tim Waugh , linux-parport@lists.infradead.org, Andrew Morton , LKML Subject: Re: [PATCH] paride: test off by one References: <4B3772CA.80505@gmail.com> In-Reply-To: <4B3772CA.80505@gmail.com> 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 With `while (j++ < PX_SPIN)' j reaches PX_SPIN + 1 after the loop. This is probably unlikely to produce a problem. Signed-off-by: Roel Kluin --- If you want this, this is probably better: diff --git a/drivers/block/paride/pcd.c b/drivers/block/paride/pcd.c index 8866ca3..71acf4e 100644 --- a/drivers/block/paride/pcd.c +++ b/drivers/block/paride/pcd.c @@ -341,11 +341,11 @@ static int pcd_wait(struct pcd_unit *cd, int go, int stop, char *fun, char *msg) && (j++ < PCD_SPIN)) udelay(PCD_DELAY); - if ((r & (IDE_ERR & stop)) || (j >= PCD_SPIN)) { + if ((r & (IDE_ERR & stop)) || (j > PCD_SPIN)) { s = read_reg(cd, 7); e = read_reg(cd, 1); p = read_reg(cd, 2); - if (j >= PCD_SPIN) + if (j > PCD_SPIN) e |= 0x100; if (fun) printk("%s: %s %s: alt=0x%x stat=0x%x err=0x%x" diff --git a/drivers/block/paride/pf.c b/drivers/block/paride/pf.c index ea54ea3..60fd50c 100644 --- a/drivers/block/paride/pf.c +++ b/drivers/block/paride/pf.c @@ -391,11 +391,11 @@ static int pf_wait(struct pf_unit *pf, int go, int stop, char *fun, char *msg) && (j++ < PF_SPIN)) udelay(PF_SPIN_DEL); - if ((r & (STAT_ERR & stop)) || (j >= PF_SPIN)) { + if ((r & (STAT_ERR & stop)) || (j > PF_SPIN)) { s = read_reg(pf, 7); e = read_reg(pf, 1); p = read_reg(pf, 2); - if (j >= PF_SPIN) + if (j > PF_SPIN) e |= 0x100; if (fun) printk("%s: %s %s: alt=0x%x stat=0x%x err=0x%x" diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c index 1e4006e..bc5825f 100644 --- a/drivers/block/paride/pt.c +++ b/drivers/block/paride/pt.c @@ -274,11 +274,11 @@ static int pt_wait(struct pt_unit *tape, int go, int stop, char *fun, char *msg) && (j++ < PT_SPIN)) udelay(PT_SPIN_DEL); - if ((r & (STAT_ERR & stop)) || (j >= PT_SPIN)) { + if ((r & (STAT_ERR & stop)) || (j > PT_SPIN)) { s = read_reg(pi, 7); e = read_reg(pi, 1); p = read_reg(pi, 2); - if (j >= PT_SPIN) + if (j > PT_SPIN) e |= 0x100; if (fun) printk("%s: %s %s: alt=0x%x stat=0x%x err=0x%x"