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Message-ID: <201606271139.pUB2VEVU%fengguang.wu@intel.com>
Date:	Mon, 27 Jun 2016 11:48:53 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Cc:	kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Sudip Mukherjee <sudipm.mukherjee@...il.com>
Subject: Re: [PATCH] m32r: fix build warning about putc

Hi,

[auto build test WARNING on v4.7-rc5]
[also build test WARNING on next-20160624]
[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/Sudip-Mukherjee/m32r-fix-build-warning-about-putc/20160627-094312
config: m32r-m32104ut_defconfig (attached as .config)
compiler: m32r-linux-gcc (GCC) 4.9.0
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=m32r 

All warnings (new ones prefixed by >>):

   In file included from arch/m32r/boot/compressed/misc.c:25:0:
   arch/m32r/boot/compressed/m32r_sio.c: In function 'puts':
>> arch/m32r/boot/compressed/m32r_sio.c:16:2: warning: suggest parentheses around assignment used as truth value [-Wparentheses]
     while (c = *s++)
     ^

vim +16 arch/m32r/boot/compressed/m32r_sio.c

     1	/*
     2	 * arch/m32r/boot/compressed/m32r_sio.c
     3	 *
     4	 * 2003-02-12:	Takeo Takahashi
     5	 * 2006-11-30:	OPSPUT support by Kazuhiro Inaoka
     6	 *
     7	 */
     8	
     9	#include <asm/processor.h>
    10	
    11	static void m32r_putc(char c);
    12	
    13	static int puts(const char *s)
    14	{
    15		char c;
  > 16		while (c = *s++)
    17			m32r_putc(c);
    18		return 0;
    19	}
    20	
    21	#if defined(CONFIG_PLAT_M32700UT) || defined(CONFIG_PLAT_OPSPUT)
    22	#include <asm/m32r.h>
    23	#include <asm/io.h>
    24	

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

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