linux-kernel - Re: [PATCH] kernel: trace: pass export pointer as argument to ->write()

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Date:   Thu, 18 May 2017 19:10:59 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Felipe Balbi <felipe.balbi@...ux.intel.com>
Cc:     kbuild-all@...org,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
        Steven Rostedt <rostedt@...dmis.org>,
        Ingo Molnar <mingo@...hat.com>, linux-kernel@...r.kernel.org,
        Chunyan Zhang <zhang.chunyan@...aro.org>,
        Felipe Balbi <felipe.balbi@...ux.intel.com>
Subject: Re: [PATCH] kernel: trace: pass export pointer as argument to
 ->write()

Hi Felipe,

[auto build test ERROR on tip/perf/core]
[also build test ERROR on v4.12-rc1 next-20170518]
[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/Felipe-Balbi/kernel-trace-pass-export-pointer-as-argument-to-write/20170518-135452
config: i386-allmodconfig (attached as .config)
compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):

   drivers/hwtracing/stm/ftrace.c: In function 'stm_ftrace_write':
>> drivers/hwtracing/stm/ftrace.c:49:19: error: incompatible type for argument 1 of 'stm_source_write'
     stm_source_write(stm->data, STM_FTRACE_CHAN, buf, len);
                      ^~~
   In file included from drivers/hwtracing/stm/ftrace.c:18:0:
   include/linux/stm.h:136:13: note: expected 'struct stm_source_data *' but argument is of type 'struct stm_source_data'
    int notrace stm_source_write(struct stm_source_data *data, unsigned int chan,
                ^~~~~~~~~~~~~~~~

vim +/stm_source_write +49 drivers/hwtracing/stm/ftrace.c

    43	 */
    44	static void notrace
    45	stm_ftrace_write(struct trace_export *export, const void *buf, unsigned int len)
    46	{
    47		struct stm_ftrace *stm = container_of(export, struct stm_ftrace, ftrace);
    48	
  > 49		stm_source_write(stm->data, STM_FTRACE_CHAN, buf, len);
    50	}
    51	
    52	static int stm_ftrace_link(struct stm_source_data *data)

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