From patchwork Mon Jan 19 16:22:55 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 5659431 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Original-To: patchwork-linux-sh@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 38439C058D for ; Mon, 19 Jan 2015 16:23:09 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 58A5620251 for ; Mon, 19 Jan 2015 16:23:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 429322020E for ; Mon, 19 Jan 2015 16:23:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751426AbbASQXG (ORCPT ); Mon, 19 Jan 2015 11:23:06 -0500 Received: from sauhun.de ([89.238.76.85]:58540 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751356AbbASQXG (ORCPT ); Mon, 19 Jan 2015 11:23:06 -0500 Received: from p4fe24a52.dip0.t-ipconnect.de ([79.226.74.82]:60322 helo=localhost) by pokefinder.org with esmtpsa (TLS1.2:RSA_AES_128_CBC_SHA1:128) (Exim 4.80) (envelope-from ) id 1YDF6U-00005R-91; Mon, 19 Jan 2015 17:23:02 +0100 From: Wolfram Sang To: linux-i2c@vger.kernel.org Cc: linux-sh@vger.kernel.org, Wolfram Sang , Magnus Damm , Simon Horman , Laurent Pinchart , Geert Uytterhoeven , Debora Grosse Subject: [PATCH] i2c: slave-eeprom: fix boundary check when using sysfs Date: Mon, 19 Jan 2015 17:22:55 +0100 Message-Id: <1421684575-6679-1-git-send-email-wsa@the-dreams.de> X-Mailer: git-send-email 2.1.3 Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Wolfram Sang Due to a copy&paste error, the last byte of the shared memory was not accessible via sysfs. Reported-by: Debora Grosse Signed-off-by: Wolfram Sang Acked-by: Laurent Pinchart --- drivers/i2c/i2c-slave-eeprom.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/i2c-slave-eeprom.c b/drivers/i2c/i2c-slave-eeprom.c index f432f81b0414..8f417e9054ac 100644 --- a/drivers/i2c/i2c-slave-eeprom.c +++ b/drivers/i2c/i2c-slave-eeprom.c @@ -74,7 +74,7 @@ static ssize_t i2c_slave_eeprom_bin_read(struct file *filp, struct kobject *kobj struct eeprom_data *eeprom; unsigned long flags; - if (off + count >= attr->size) + if (off + count > attr->size) return -EFBIG; eeprom = dev_get_drvdata(container_of(kobj, struct device, kobj)); @@ -92,7 +92,7 @@ static ssize_t i2c_slave_eeprom_bin_write(struct file *filp, struct kobject *kob struct eeprom_data *eeprom; unsigned long flags; - if (off + count >= attr->size) + if (off + count > attr->size) return -EFBIG; eeprom = dev_get_drvdata(container_of(kobj, struct device, kobj));