linux-kernel - [l1k:smsc95xx_5.17 281/887] drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c:472:55: sparse: sparse: Using plain integer as NULL pointer

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Date:   Sat, 9 Apr 2022 01:15:01 +0800
From:   kernel test robot <lkp@...el.com>
To:     Dave Stevenson <dave.stevenson@...pberrypi.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Dom Cobley <popcornmix@...il.com>
Subject: [l1k:smsc95xx_5.17 281/887]
 drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c:472:55: sparse:
 sparse: Using plain integer as NULL pointer

tree:   https://github.com/l1k/linux smsc95xx_5.17
head:   05d68ced287b30f62f18f95b5476135ef669804a
commit: 56d0cd616fe11877854ad1b0768b3be67bb30349 [281/887] staging: vc04_services: Add new vc-sm-cma driver
config: csky-randconfig-s031-20220408 (https://download.01.org/0day-ci/archive/20220409/202204090144.S9m5LfZs-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 11.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://github.com/l1k/linux/commit/56d0cd616fe11877854ad1b0768b3be67bb30349
        git remote add l1k https://github.com/l1k/linux
        git fetch --no-tags l1k smsc95xx_5.17
        git checkout 56d0cd616fe11877854ad1b0768b3be67bb30349
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=csky SHELL=/bin/bash drivers/staging/vc04_services/vc-sm-cma/ drivers/staging/vc04_services/vchiq-mmal/

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


sparse warnings: (new ones prefixed by >>)
>> drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c:472:55: sparse: sparse: Using plain integer as NULL pointer
   drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c:501:59: sparse: sparse: Using plain integer as NULL pointer

vim +472 drivers/staging/vc04_services/vc-sm-cma/vc_sm_cma_vchi.c

   467	
   468	int vc_sm_cma_vchi_free(struct sm_instance *handle, struct vc_sm_free_t *msg,
   469				u32 *cur_trans_id)
   470	{
   471		return vc_sm_cma_vchi_send_msg(handle, VC_SM_MSG_TYPE_FREE,
 > 472					   msg, sizeof(*msg), 0, 0, cur_trans_id, 0);
   473	}
   474	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp