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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