From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755336AbdLGNkX (ORCPT ); Thu, 7 Dec 2017 08:40:23 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:33906 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754871AbdLGNJk (ORCPT ); Thu, 7 Dec 2017 08:09:40 -0500 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Colin Ian King , Alan Stern Subject: [PATCH 4.4 49/49] usb: host: fix incorrect updating of offset Date: Thu, 7 Dec 2017 14:07:43 +0100 Message-Id: <20171207124710.652359161@linuxfoundation.org> X-Mailer: git-send-email 2.15.1 In-Reply-To: <20171207124703.742654162@linuxfoundation.org> References: <20171207124703.742654162@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Colin Ian King commit 1d5a31582ef046d3b233f0da1a68ae26519b2f0a upstream. The variable temp is incorrectly being updated, instead it should be offset otherwise the loop just reads the same capability value and loops forever. Thanks to Alan Stern for pointing out the correct fix to my original fix. Fix also cleans up clang warning: drivers/usb/host/ehci-dbg.c:840:4: warning: Value stored to 'temp' is never read Fixes: d49d43174400 ("USB: misc ehci updates") Signed-off-by: Colin Ian King Acked-by: Alan Stern Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-dbg.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/usb/host/ehci-dbg.c +++ b/drivers/usb/host/ehci-dbg.c @@ -851,7 +851,7 @@ static ssize_t fill_registers_buffer(str default: /* unknown */ break; } - temp = (cap >> 8) & 0xff; + offset = (cap >> 8) & 0xff; } } #endif