linux-kernel - Re: [PATCH 4/6] soc: rockchip: add reboot mode driver

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Date:	Tue, 22 Dec 2015 08:59:59 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Andy Yan <andy.yan@...k-chips.com>
Cc:	kbuild-all@...org, robh+dt@...nel.org, heiko@...ech.de,
	arnd@...db.de, john.stultz@...aro.org, sjg@...omium.org,
	alexandre.belloni@...e-electrons.com, treding@...dia.com,
	galak@...eaurora.org, ijc+devicetree@...lion.org.uk,
	wxt@...k-chips.com, catalin.marinas@....com, olof@...om.net,
	geert+renesas@...der.be, linux-rockchip@...ts.infradead.org,
	dbaryshkov@...il.com, sre@...nel.org, jun.nie@...aro.org,
	pawel.moll@....com, will.deacon@....com, akpm@...ux-foundation.org,
	devicetree@...r.kernel.org, linux@....linux.org.uk,
	gregkh@...uxfoundation.org, joel@....id.au,
	linux-arm-kernel@...ts.infradead.org, lorenzo.pieralisi@....com,
	khilman@...aro.org, moritz.fischer@...us.com,
	linux-kernel@...r.kernel.org, mark.rutland@....com,
	Andy Yan <andy.yan@...k-chips.com>
Subject: Re: [PATCH 4/6] soc: rockchip: add reboot mode driver

Hi Andy,

[auto build test WARNING on robh/for-next]
[also build test WARNING on v4.4-rc6 next-20151221]
[cannot apply to rockchip/for-next]

url:    https://github.com/0day-ci/linux/commits/Andy-Yan/misc-add-reboot-mode-driver/20151221-195031
base:   https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux for-next
config: arm-allmodconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=arm 

All warnings (new ones prefixed by >>):

   drivers/soc/rockchip/reboot.c: In function 'rockchip_reboot_mode_write':
>> drivers/soc/rockchip/reboot.c:28:1: warning: no return statement in function returning non-void [-Wreturn-type]
    }
    ^
   drivers/soc/rockchip/reboot.c: In function 'rockchip_reboot_probe':
   drivers/soc/rockchip/reboot.c:32:26: warning: unused variable 'reboot' [-Wunused-variable]
     struct rockchip_reboot *reboot;
                             ^

vim +28 drivers/soc/rockchip/reboot.c

    12	#include <linux/of.h>
    13	#include <linux/of_address.h>
    14	#include <linux/platform_device.h>
    15	#include <linux/reboot.h>
    16	#include <linux/regmap.h>
    17	#include <linux/mfd/syscon.h>
    18	#include "loader.h"
    19	
    20	struct regmap *map;
    21	u32 offset;
    22	
    23	static int rockchip_reboot_mode_write(int magic)
    24	{
    25		pr_info("%s---------magic:%x\n", __func__, magic);
    26		regmap_write(map, offset, magic);
    27	
  > 28	}
    29	
    30	static int __init rockchip_reboot_probe(struct platform_device *pdev)
    31	{
    32		struct rockchip_reboot *reboot;
    33		int ret;
    34	
    35		map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node,
    36							      "rockchip,regmap");

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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