linux-kernel - Re: [PATCH-SPEAKUP 1/2] return same error value from spk_set_key

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Date:   Tue, 28 Feb 2017 20:13:22 +0800
From:   kbuild test robot <lkp@...el.com>
To:     "Pranay Kr. Srivastava" <pranjas@...il.com>
Cc:     kbuild-all@...org, w.d.hubbs@...il.com, chris@...-brannons.com,
        kirk@...sers.ca, samuel.thibault@...-lyon.org,
        gregkh@...uxfoundation.org, sfr@...b.auug.org.au,
        speakup@...ux-speakup.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH-SPEAKUP 1/2] return same error value from spk_set_key_info

Hi Pranay,

[auto build test WARNING on staging/staging-testing]
[also build test WARNING on v4.10 next-20170228]
[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/Pranay-Kr-Srivastava/return-same-error-value-from-spk_set_key_info/20170222-152440
config: i386-randconfig-c0-02281459 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from include/linux/linkage.h:4:0,
                    from include/linux/kernel.h:6,
                    from drivers/staging/speakup/main.c:21:
   drivers/staging/speakup/main.c: In function 'spk_set_key_info':
>> include/linux/compiler.h:117:18: warning: format '%lu' expects argument of type 'long unsigned int', but argument 4 has type 'unsigned int' [-Wformat=]
       static struct ftrace_branch_data  \
                     ^
   include/linux/compiler.h:160:16: note: in definition of macro '__trace_if'
      ______r = !!(cond);     \
                   ^
   include/linux/dynamic_debug.h:125:2: note: in expansion of macro 'if'
     if (DYNAMIC_DEBUG_BRANCH(descriptor))   \
     ^
   include/linux/compiler.h:139:58: note: in expansion of macro '__branch_check__'
    #  define unlikely(x) (__builtin_constant_p(x) ? !!(x) : __branch_check__(x, 0))
                                                             ^
   include/linux/dynamic_debug.h:117:2: note: in expansion of macro 'unlikely'
     unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT)
     ^
   include/linux/dynamic_debug.h:125:6: note: in expansion of macro 'DYNAMIC_DEBUG_BRANCH'
     if (DYNAMIC_DEBUG_BRANCH(descriptor))   \
         ^
   include/linux/printk.h:324:2: note: in expansion of macro 'dynamic_pr_debug'
     dynamic_pr_debug(fmt, ##__VA_ARGS__)
     ^
   drivers/staging/speakup/main.c:1228:3: note: in expansion of macro 'pr_debug'
      pr_debug("too many key_infos (%d over %lu)\n",
      ^

vim +117 include/linux/compiler.h

2bcd521a Steven Rostedt  2008-11-21  101  	};
2bcd521a Steven Rostedt  2008-11-21  102  };
2ed84eeb Steven Rostedt  2008-11-12  103  
2ed84eeb Steven Rostedt  2008-11-12  104  /*
2ed84eeb Steven Rostedt  2008-11-12  105   * Note: DISABLE_BRANCH_PROFILING can be used by special lowlevel code
2ed84eeb Steven Rostedt  2008-11-12  106   * to disable branch tracing on a per file basis.
2ed84eeb Steven Rostedt  2008-11-12  107   */
d9ad8bc0 Bart Van Assche 2009-04-05  108  #if defined(CONFIG_TRACE_BRANCH_PROFILING) \
d9ad8bc0 Bart Van Assche 2009-04-05  109      && !defined(DISABLE_BRANCH_PROFILING) && !defined(__CHECKER__)
2ed84eeb Steven Rostedt  2008-11-12  110  void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
1f0d69a9 Steven Rostedt  2008-11-12  111  
1f0d69a9 Steven Rostedt  2008-11-12  112  #define likely_notrace(x)	__builtin_expect(!!(x), 1)
1f0d69a9 Steven Rostedt  2008-11-12  113  #define unlikely_notrace(x)	__builtin_expect(!!(x), 0)
1f0d69a9 Steven Rostedt  2008-11-12  114  
45b79749 Steven Rostedt  2008-11-21  115  #define __branch_check__(x, expect) ({					\
1f0d69a9 Steven Rostedt  2008-11-12  116  			int ______r;					\
2ed84eeb Steven Rostedt  2008-11-12 @117  			static struct ftrace_branch_data		\
1f0d69a9 Steven Rostedt  2008-11-12  118  				__attribute__((__aligned__(4)))		\
45b79749 Steven Rostedt  2008-11-21  119  				__attribute__((section("_ftrace_annotated_branch"))) \
1f0d69a9 Steven Rostedt  2008-11-12  120  				______f = {				\
1f0d69a9 Steven Rostedt  2008-11-12  121  				.func = __func__,			\
1f0d69a9 Steven Rostedt  2008-11-12  122  				.file = __FILE__,			\
1f0d69a9 Steven Rostedt  2008-11-12  123  				.line = __LINE__,			\
1f0d69a9 Steven Rostedt  2008-11-12  124  			};						\
1f0d69a9 Steven Rostedt  2008-11-12  125  			______r = likely_notrace(x);			\

:::::: The code at line 117 was first introduced by commit
:::::: 2ed84eeb8808cf3c9f039213ca137ffd7d753f0e trace: rename unlikely profiler to branch profiler

:::::: TO: Steven Rostedt <srostedt@...hat.com>
:::::: CC: Ingo Molnar <mingo@...e.hu>

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