Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S1751153AbdHSM1m (ORCPT <rfc822;w@1wt.eu>);
        Sat, 19 Aug 2017 08:27:42 -0400
Received: from mail-oi0-f67.google.com ([209.85.218.67]:35580 "EHLO
        mail-oi0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
        with ESMTP id S1750999AbdHSM1j (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Sat, 19 Aug 2017 08:27:39 -0400
MIME-Version: 1.0
In-Reply-To: <201708190909.9GRNaEaj%fengguang.wu@intel.com>
References: <1502791207-26951-3-git-send-email-oleksandrs@mellanox.com> <201708190909.9GRNaEaj%fengguang.wu@intel.com>
From: Arnd Bergmann <arnd@arndb.de>
Date: Sat, 19 Aug 2017 14:27:37 +0200
X-Google-Sender-Auth: dsENZEXEfL6mJpKYdmAiJs8RAfA
Message-ID: <CAK8P3a3H5QUBn9LDqqrwuES6UUH438B4asWXQ-PDhgb-oaWFHA@mail.gmail.com>
Subject: Re: [patch v3 2/3] drivers: jtag: Add Aspeed SoC 24xx and 25xx
 families JTAG master driver
To: kbuild test robot <lkp@intel.com>
Cc: Oleksandr Shamray <oleksandrs@mellanox.com>, kbuild-all@01.org,
        gregkh <gregkh@linuxfoundation.org>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        Linux ARM <linux-arm-kernel@lists.infradead.org>,
        devicetree@vger.kernel.org,
        OpenBMC Maillist <openbmc@lists.ozlabs.org>,
        Joel Stanley <joel@jms.id.au>,
        =?UTF-8?B?SmnFmcOtIFDDrXJrbw==?= <jiri@resnulli.us>,
        Tobias Klauser <tklauser@distanz.ch>, linux-serial@vger.kernel.org,
        mec@shout.net, vadimp@maellanox.com, system-sw-low-level@mellanox.com,
        Rob Herring <robh+dt@kernel.org>,
        openocd-devel-owner@lists.sourceforge.net,
        Jiri Pirko <jiri@mellanox.com>, Richard Weinberger <richard@nod.at>,
        uml-devel <user-mode-linux-devel@lists.sourceforge.net>
Content-Type: text/plain; charset="UTF-8"
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org
Content-Length: 1409
Lines: 32

On Sat, Aug 19, 2017 at 3:21 AM, kbuild test robot <lkp@intel.com> wrote:
> Hi Oleksandr,
>
> [auto build test ERROR on linus/master]
> [also build test ERROR on v4.13-rc5 next-20170817]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url:    https://github.com/0day-ci/linux/commits/Oleksandr-Shamray/drivers-jtag-Add-JTAG-core-driver/20170818-114739
> config: um-allyesconfig (attached as .config)
> compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
> reproduce:
>         # save the attached .config to linux build tree
>         make ARCH=um
>
> All errors (new ones prefixed by >>):
>
>    drivers/auxdisplay/img-ascii-lcd.o: In function `img_ascii_lcd_probe':
>    drivers/auxdisplay/img-ascii-lcd.c:386: undefined reference to `devm_ioremap_resource'
>    drivers/jtag/jtag-aspeed.o: In function `aspeed_jtag_init':
>>> drivers/jtag/jtag-aspeed.c:635: undefined reference to `devm_ioremap_resource'
>    collect2: error: ld returned 1 exit status

So arch/um now provides an ioremap() stub despite the absence of
CONFIG_HAS_IOMEM, but the respective devm_* interface from
lib/devres.c is not available.

We can either work around this for new drivers as we used to do for
ioremap() by adding a correct 'depends on HAS_IOMEM' Kconfig
dependency, or we could find a way for arch/um to provide stubs
for the additional functions as well.

      Arnd