linux-kernel - Re: [PATCH 4/6] clocksource/drivers/armv7m_systick: Add the COMPILE

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Message-ID: <201606031329.OCxZ4vPm%fengguang.wu@intel.com>
Date:	Fri, 3 Jun 2016 13:14:57 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:	kbuild-all@...org, daniel.lezcano@...aro.org, tglx@...utronix.de,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/6] clocksource/drivers/armv7m_systick: Add the
 COMPILE_TEST option

Hi,

[auto build test ERROR on tip/timers/core]
[also build test ERROR on v4.7-rc1 next-20160602]
[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/Daniel-Lezcano/clk-Add-missing-clk_get_sys-stub/20160603-054643
config: um-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.1.1-1) 6.1.1 20160430
reproduce:
        # save the attached .config to linux build tree
        make ARCH=um 

All errors (new ones prefixed by >>):

   drivers/clocksource/armv7m_systick.c: In function 'system_timer_of_register':
>> drivers/clocksource/armv7m_systick.c:74:2: error: implicit declaration of function 'iounmap' [-Werror=implicit-function-declaration]
     iounmap(base);
     ^~~~~~~
   cc1: some warnings being treated as errors

vim +/iounmap +74 drivers/clocksource/armv7m_systick.c

4958ebb3 Maxime Coquelin 2015-05-09  58  		pr_err("failed to init clocksource (%d)\n", ret);
4958ebb3 Maxime Coquelin 2015-05-09  59  		if (clk)
4958ebb3 Maxime Coquelin 2015-05-09  60  			goto out_clk_disable;
4958ebb3 Maxime Coquelin 2015-05-09  61  		else
4958ebb3 Maxime Coquelin 2015-05-09  62  			goto out_unmap;
4958ebb3 Maxime Coquelin 2015-05-09  63  	}
4958ebb3 Maxime Coquelin 2015-05-09  64  
4958ebb3 Maxime Coquelin 2015-05-09  65  	pr_info("ARM System timer initialized as clocksource\n");
4958ebb3 Maxime Coquelin 2015-05-09  66  
4958ebb3 Maxime Coquelin 2015-05-09  67  	return;
4958ebb3 Maxime Coquelin 2015-05-09  68  
4958ebb3 Maxime Coquelin 2015-05-09  69  out_clk_disable:
4958ebb3 Maxime Coquelin 2015-05-09  70  	clk_disable_unprepare(clk);
4958ebb3 Maxime Coquelin 2015-05-09  71  out_clk_put:
4958ebb3 Maxime Coquelin 2015-05-09  72  	clk_put(clk);
4958ebb3 Maxime Coquelin 2015-05-09  73  out_unmap:
4958ebb3 Maxime Coquelin 2015-05-09 @74  	iounmap(base);
4958ebb3 Maxime Coquelin 2015-05-09  75  	pr_warn("ARM System timer register failed (%d)\n", ret);
4958ebb3 Maxime Coquelin 2015-05-09  76  }
4958ebb3 Maxime Coquelin 2015-05-09  77  
4958ebb3 Maxime Coquelin 2015-05-09  78  CLOCKSOURCE_OF_DECLARE(arm_systick, "arm,armv7m-systick",
4958ebb3 Maxime Coquelin 2015-05-09  79  			system_timer_of_register);

:::::: The code at line 74 was first introduced by commit
:::::: 4958ebb3d027886c46b936453745dba59b09c578 clocksource/drivers/armv7m_systick: Add ARM System timer driver

:::::: TO: Maxime Coquelin <mcoquelin.stm32@...il.com>
:::::: CC: Daniel Lezcano <daniel.lezcano@...aro.org>

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