linux-kernel - Re: [PATCH v4] iio: pressure: mpl115: Implementing low power mode by shutdown gpio

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Message-ID: <20221009181237.24396d70@jic23-huawei>
Date:   Sun, 9 Oct 2022 18:12:37 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     kernel test robot <lkp@...el.com>
Cc:     Rajat Khandelwal <rajat.khandelwal@...ux.intel.com>,
        lars@...afoo.de, llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        rajat.khandelwal@...el.com
Subject: Re: [PATCH v4] iio: pressure: mpl115: Implementing low power mode
 by shutdown gpio

On Mon, 3 Oct 2022 18:17:57 +0800
kernel test robot <lkp@...el.com> wrote:

> Hi Rajat,
> 
> Thank you for the patch! Yet something to improve:
> 
> [auto build test ERROR on jic23-iio/togreg]
> [also build test ERROR on linus/master v6.0 next-20220930]
> [If your patch is applied to the wrong git tree, kindly drop us a note.
> And when submitting patch, we suggest to use '--base' as documented in
> https://git-scm.com/docs/git-format-patch#_base_tree_information]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Rajat-Khandelwal/iio-pressure-mpl115-Implementing-low-power-mode-by-shutdown-gpio/20221003-133904
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
> config: x86_64-randconfig-a005-20221003
> compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://github.com/intel-lab-lkp/linux/commit/284b52f6eb0616aeb44203d7114c4fb1e80b785d
>         git remote add linux-review https://github.com/intel-lab-lkp/linux
>         git fetch --no-tags linux-review Rajat-Khandelwal/iio-pressure-mpl115-Implementing-low-power-mode-by-shutdown-gpio/20221003-133904
>         git checkout 284b52f6eb0616aeb44203d7114c4fb1e80b785d
>         # save the config file
>         mkdir build_dir && cp config build_dir/.config
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash
> 
> If you fix the issue, kindly add following tag where applicable
> | Reported-by: kernel test robot <lkp@...el.com>
> 
> All errors (new ones prefixed by >>, old ones prefixed by <<):
> 
> >> ERROR: modpost: "mpl115_dev_pm_ops" [drivers/iio/pressure/mpl115_spi.ko] undefined!  
> 

You have probably figured this out, but you need the
EXPORT_NS_RUNTIME_DEV_PM_OPS()  

with appropriate namespace set.

Thanks,
Jonathan