linux-kernel - Re: [PATCH] regulator: core: Add debugfs to show constraint flags

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Message-ID: <201604212046.AK7Nfxzu%fengguang.wu@intel.com>
Date:	Thu, 21 Apr 2016 20:23:50 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Richard Fitzgerald <rf@...nsource.wolfsonmicro.com>
Cc:	kbuild-all@...org, broonie@...nel.org, lgirdwood@...il.com,
	linux-kernel@...r.kernel.org, patches@...nsource.wolfsonmicro.com
Subject: Re: [PATCH] regulator: core: Add debugfs to show constraint flags

Hi,

[auto build test ERROR on regulator/for-next]
[also build test ERROR on v4.6-rc4 next-20160420]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Richard-Fitzgerald/regulator-core-Add-debugfs-to-show-constraint-flags/20160421-200958
base:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator.git for-next
config: powerpc-allyesconfig (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=powerpc 

All errors (new ones prefixed by >>):

>> drivers/regulator/core.c:1320:10: error: initialization from incompatible pointer type [-Werror=incompatible-pointer-types]
     .read = constraint_flags_read_file,
             ^
   drivers/regulator/core.c:1320:10: note: (near initialization for 'constraint_flags_fops.read')
   drivers/regulator/core.c:2558:1: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations]
    EXPORT_SYMBOL_GPL(regulator_can_change_voltage);
    ^
   drivers/regulator/core.c:2541:5: note: declared here
    int regulator_can_change_voltage(struct regulator *regulator)
        ^
   In file included from include/linux/linkage.h:6:0,
                    from include/linux/kernel.h:6,
                    from drivers/regulator/core.c:16:
   include/linux/export.h:63:25: warning: 'regulator_can_change_voltage' is deprecated [-Wdeprecated-declarations]
     __visible const struct kernel_symbol __ksymtab_##sym \
                            ^
   include/linux/export.h:72:2: note: in expansion of macro '__EXPORT_SYMBOL'
     __EXPORT_SYMBOL(sym, "_gpl")
     ^
   drivers/regulator/core.c:2558:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL'
    EXPORT_SYMBOL_GPL(regulator_can_change_voltage);
    ^
   drivers/regulator/core.c:2541:5: note: declared here
    int regulator_can_change_voltage(struct regulator *regulator)
        ^
   cc1: some warnings being treated as errors

vim +1320 drivers/regulator/core.c

  1314	
  1315	#endif
  1316	
  1317	static const struct file_operations constraint_flags_fops = {
  1318	#ifdef CONFIG_DEBUG_FS
  1319		.open = simple_open,
> 1320		.read = constraint_flags_read_file,
  1321		.llseek = default_llseek,
  1322	#endif
  1323	};

---
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