Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754745AbcCSO7k (ORCPT ); Sat, 19 Mar 2016 10:59:40 -0400 Received: from mga04.intel.com ([192.55.52.120]:9415 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754483AbcCSO7d (ORCPT ); Sat, 19 Mar 2016 10:59:33 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.24,360,1455004800"; d="scan'208";a="767347742" Date: Sat, 19 Mar 2016 22:58:30 +0800 From: kbuild test robot To: Xiangliang Yu Cc: kbuild-all@01.org, linux-kernel@vger.kernel.org, Jon Mason , Allen Hubbe Subject: drivers/ntb/hw/amd/ntb_hw_amd.c:367:29: sparse: cast removes address space of expression Message-ID: <201603192227.ijrPiZDJ%fengguang.wu@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline 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 Content-Length: 1607 Lines: 47 tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 6b5f04b6cf8ebab9a65d9c0026c650bb2538fd0f commit: a1b3695820aa490e58915d720a1438069813008b NTB: Add support for AMD PCI-Express Non-Transparent Bridge date: 8 weeks ago reproduce: # apt-get install sparse git checkout a1b3695820aa490e58915d720a1438069813008b make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) >> drivers/ntb/hw/amd/ntb_hw_amd.c:367:29: sparse: cast removes address space of expression drivers/ntb/hw/amd/ntb_hw_amd.c:427:31: sparse: cast removes address space of expression vim +367 drivers/ntb/hw/amd/ntb_hw_amd.c 351 352 spin_lock_irqsave(&ndev->db_mask_lock, flags); 353 ndev->db_mask &= ~db_bits; 354 writew((u16)ndev->db_mask, mmio + AMD_DBMASK_OFFSET); 355 spin_unlock_irqrestore(&ndev->db_mask_lock, flags); 356 357 return 0; 358 } 359 360 static int amd_ntb_peer_db_addr(struct ntb_dev *ntb, 361 phys_addr_t *db_addr, 362 resource_size_t *db_size) 363 { 364 struct amd_ntb_dev *ndev = ntb_ndev(ntb); 365 366 if (db_addr) > 367 *db_addr = (phys_addr_t)(ndev->peer_mmio + AMD_DBREQ_OFFSET); 368 if (db_size) 369 *db_size = sizeof(u32); 370 371 return 0; 372 } 373 374 static int amd_ntb_peer_db_set(struct ntb_dev *ntb, u64 db_bits) 375 { --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation