From mboxrd@z Thu Jan 1 00:00:00 1970 From: Larry Finger Subject: Re: [PATCH 1/2 V3] kaweth: Fix locking to be SMP-safe Date: Thu, 02 Apr 2009 10:02:18 -0500 Message-ID: <49D4D37A.50504@lwfinger.net> References: <20090402100223.GA30905@gondor.apana.org.au> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: davem@davemloft.net, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, oliver@neukum.org To: Herbert Xu Return-path: Received: from fmailhost03.isp.att.net ([207.115.11.53]:38117 "EHLO fmailhost03.isp.att.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763918AbZDBPDI (ORCPT ); Thu, 2 Apr 2009 11:03:08 -0400 In-Reply-To: <20090402100223.GA30905@gondor.apana.org.au> Sender: netdev-owner@vger.kernel.org List-ID: Herbert Xu wrote: > Larry Finger wrote: >> @@ -796,7 +795,7 @@ static int kaweth_start_xmit(struct sk_b >> >> int res; >> >> - spin_lock(&kaweth->device_lock); >> + spin_lock_irq(&kaweth->device_lock); > > Should be irqsave unless you don't expect to be called via netpoll. The .ndo_poll_controller callback is left at NULL in this driver. I believe the patch to be OK. Larry