From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932470AbbI2Dmb (ORCPT ); Mon, 28 Sep 2015 23:42:31 -0400 Received: from mga09.intel.com ([134.134.136.24]:21350 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932209AbbI2Dm3 (ORCPT ); Mon, 28 Sep 2015 23:42:29 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.17,606,1437462000"; d="scan'208";a="654067466" Date: Tue, 29 Sep 2015 11:41:11 +0800 From: kbuild test robot To: Maciek Borzecki Cc: kbuild-all@01.org, linux-kernel@vger.kernel.org, Richard Purdie , Jacek Anaszewski , linux-leds@vger.kernel.org, linux-doc@vger.kernel.org, Jonathan Corbet , Maciek Borzecki Subject: Re: [PATCH 2/3] leds: add debugfs to device trigger Message-ID: <201509291106.01PhMygT%fengguang.wu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.23 (2014-03-12) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: fengguang.wu@intel.com X-SA-Exim-Scanned: No (on bee); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Maciek, [auto build test results on v4.3-rc3 -- if it's inappropriate base, please ignore] reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) >> drivers/leds/trigger/ledtrig-device.c:214:22: sparse: incorrect type in argument 1 (different address spaces) drivers/leds/trigger/ledtrig-device.c:214:22: expected char const * drivers/leds/trigger/ledtrig-device.c:214:22: got char const [noderef] *buf vim +214 drivers/leds/trigger/ledtrig-device.c 198 .read = seq_read, 199 .llseek = seq_lseek, 200 .release = single_release 201 }; 202 203 static int get_dev_from_user(const char __user *buf, size_t size, 204 dev_t *dev) 205 { 206 unsigned int major; 207 unsigned int minor; 208 int ret; 209 210 WARN_ON(dev == NULL); 211 if (dev == NULL) 212 return -EINVAL; 213 > 214 ret = sscanf(buf, "%u:%u", &major, &minor); 215 if (ret < 2) 216 return -EINVAL; 217 218 *dev = MKDEV(major, minor); 219 return 0; 220 } 221 222 static ssize_t ledtrig_dev_register_write(struct file *filp, --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation