From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roel Kluin <12o3l@tiscali.nl> Subject: [PATCH] postfix decrement error in smc911x_reset(); drivers/net/smc911x.c Date: Mon, 05 Nov 2007 00:45:53 +0100 Message-ID: <472E59B1.80206@tiscali.nl> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from smtp-out2.tiscali.nl ([195.241.79.177]:50892 "EHLO smtp-out2.tiscali.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751893AbXKDXp6 (ORCPT ); Sun, 4 Nov 2007 18:45:58 -0500 Received: from [82.171.216.234] (helo=[192.168.1.2]) by smtp-out2.tiscali.nl with esmtp (Tiscali http://www.tiscali.nl) id 1IopAC-000553-ED for ; Mon, 05 Nov 2007 00:45:56 +0100 Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org If timeout causes the loop to end, a postfix decrement causes its value to become 4294967295 (unsigned int), not 0. Signed-off-by: Roel Kluin <12o3l@tiscali.nl> --- diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c index dd18af0..41f3c8f 100644 --- a/drivers/net/smc911x.c +++ b/drivers/net/smc911x.c @@ -243,7 +243,7 @@ static void smc911x_reset(struct net_device *dev) do { udelay(10); reg = SMC_GET_PMT_CTRL() & PMT_CTRL_READY_; - } while ( timeout-- && !reg); + } while ( --timeout && !reg); if (timeout == 0) { PRINTK("%s: smc911x_reset timeout waiting for PM restore\n", dev->name); return;