linux-kernel - [ammarfaizi2-block:google/android/kernel/common/android11-kiwi-5.4 2937/9999] drivers/mmc/core/crypto.c:14:6: warning: no previous prototype for function 'mmc_crypto_setup

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Date:   Sun, 16 Jan 2022 21:56:05 +0800
From:   kernel test robot <lkp@...el.com>
To:     Satya Tangirala <satyat@...gle.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        GNU/Weeb Mailing List <gwml@...weeb.org>,
        linux-kernel@...r.kernel.org, Eric Biggers <ebiggers@...gle.com>
Subject: [ammarfaizi2-block:google/android/kernel/common/android11-kiwi-5.4
 2937/9999] drivers/mmc/core/crypto.c:14:6: warning: no previous prototype
 for function 'mmc_crypto_setup_queue'

Hi Satya,

FYI, the error/warning still remains.

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android11-kiwi-5.4
head:   7d1d5848183bd1d9086d0572f9af431d3ded407f
commit: 555cf12eb672727979bc7b7840c7503f3de27220 [2937/9999] ANDROID: mmc: MMC crypto API
config: x86_64-randconfig-a003 (https://download.01.org/0day-ci/archive/20220116/202201162151.jM4CfcNA-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c63a3175c2947e8c1a2d3bbe16a8586600705c54)
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/ammarfaizi2/linux-block/commit/555cf12eb672727979bc7b7840c7503f3de27220
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android11-kiwi-5.4
        git checkout 555cf12eb672727979bc7b7840c7503f3de27220
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/mmc/core/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All warnings (new ones prefixed by >>):

>> drivers/mmc/core/crypto.c:14:6: warning: no previous prototype for function 'mmc_crypto_setup_queue' [-Wmissing-prototypes]
   void mmc_crypto_setup_queue(struct mmc_host *host, struct request_queue *q)
        ^
   drivers/mmc/core/crypto.c:14:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void mmc_crypto_setup_queue(struct mmc_host *host, struct request_queue *q)
   ^
   static 
>> drivers/mmc/core/crypto.c:21:6: warning: no previous prototype for function 'mmc_crypto_free_host' [-Wmissing-prototypes]
   void mmc_crypto_free_host(struct mmc_host *host)
        ^
   drivers/mmc/core/crypto.c:21:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void mmc_crypto_free_host(struct mmc_host *host)
   ^
   static 
>> drivers/mmc/core/crypto.c:26:6: warning: no previous prototype for function 'mmc_crypto_prepare_req' [-Wmissing-prototypes]
   void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq)
        ^
   drivers/mmc/core/crypto.c:26:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq)
   ^
   static 
   3 warnings generated.


vim +/mmc_crypto_setup_queue +14 drivers/mmc/core/crypto.c

    13	
  > 14	void mmc_crypto_setup_queue(struct mmc_host *host, struct request_queue *q)
    15	{
    16		if (host->caps2 & MMC_CAP2_CRYPTO)
    17			q->ksm = host->ksm;
    18	}
    19	EXPORT_SYMBOL_GPL(mmc_crypto_setup_queue);
    20	
  > 21	void mmc_crypto_free_host(struct mmc_host *host)
    22	{
    23		keyslot_manager_destroy(host->ksm);
    24	}
    25	
  > 26	void mmc_crypto_prepare_req(struct mmc_queue_req *mqrq)

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org