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From: kernel test robot <lkp@intel.com>
To: Qingqing Zhuo <qingqing.zhuo@amd.com>
Cc: kbuild-all@lists.01.org, linux-kernel@vger.kernel.org,
	Alex Deucher <alexander.deucher@amd.com>,
	Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Subject: drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c:81:40: sparse: sparse: Using plain integer as NULL pointer
Date: Tue, 25 Jan 2022 21:42:06 +0800	[thread overview]
Message-ID: <202201252155.rqBWi1tb-lkp@intel.com> (raw)

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a08b41ab9e2e468647f78eb17c28e29b93006394
commit: d738db6883df3e3c513f9e777c842262693f951b drm/amd/display: move FPU associated DSC code to DML folder
date:   3 months ago
config: i386-randconfig-s002-20211122 (https://download.01.org/0day-ci/archive/20220125/202201252155.rqBWi1tb-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d738db6883df3e3c513f9e777c842262693f951b
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout d738db6883df3e3c513f9e777c842262693f951b
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash

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


sparse warnings: (new ones prefixed by >>)
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c: note: in included file:
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:28:18: sparse: sparse: symbol 'qp_table_422_10bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:61:18: sparse: sparse: symbol 'qp_table_444_8bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:102:18: sparse: sparse: symbol 'qp_table_420_12bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:135:18: sparse: sparse: symbol 'qp_table_444_10bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:188:18: sparse: sparse: symbol 'qp_table_420_8bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:209:18: sparse: sparse: symbol 'qp_table_444_8bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:250:18: sparse: sparse: symbol 'qp_table_444_12bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:315:18: sparse: sparse: symbol 'qp_table_420_12bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:348:18: sparse: sparse: symbol 'qp_table_422_12bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:389:18: sparse: sparse: symbol 'qp_table_422_12bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:430:18: sparse: sparse: symbol 'qp_table_444_12bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:495:18: sparse: sparse: symbol 'qp_table_420_8bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:516:18: sparse: sparse: symbol 'qp_table_422_8bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:541:18: sparse: sparse: symbol 'qp_table_422_10bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:574:16: sparse: sparse: symbol 'qp_table_420_10bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:601:18: sparse: sparse: symbol 'qp_table_420_10bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:628:18: sparse: sparse: symbol 'qp_table_444_10bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:681:18: sparse: sparse: symbol 'qp_table_422_8bpc_max' was not declared. Should it be static?
>> drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c:81:40: sparse: sparse: Using plain integer as NULL pointer
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c:106:22: sparse: sparse: Using plain integer as NULL pointer

vim +81 drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c

    73	
    74	static void get_qp_set(qp_set qps, enum colour_mode cm, enum bits_per_comp bpc,
    75			       enum max_min max_min, float bpp)
    76	{
    77		int mode = MODE_SELECT(444, 422, 420);
    78		int sel = table_hash(mode, bpc, max_min);
    79		int table_size = 0;
    80		int index;
  > 81		const struct qp_entry *table = 0L;
    82	
    83		// alias enum
    84		enum { min = DAL_MM_MIN, max = DAL_MM_MAX };
    85		switch (sel) {
    86			TABLE_CASE(444,  8, max);
    87			TABLE_CASE(444,  8, min);
    88			TABLE_CASE(444, 10, max);
    89			TABLE_CASE(444, 10, min);
    90			TABLE_CASE(444, 12, max);
    91			TABLE_CASE(444, 12, min);
    92			TABLE_CASE(422,  8, max);
    93			TABLE_CASE(422,  8, min);
    94			TABLE_CASE(422, 10, max);
    95			TABLE_CASE(422, 10, min);
    96			TABLE_CASE(422, 12, max);
    97			TABLE_CASE(422, 12, min);
    98			TABLE_CASE(420,  8, max);
    99			TABLE_CASE(420,  8, min);
   100			TABLE_CASE(420, 10, max);
   101			TABLE_CASE(420, 10, min);
   102			TABLE_CASE(420, 12, max);
   103			TABLE_CASE(420, 12, min);
   104		}
   105	
   106		if (table == 0)
   107			return;
   108	
   109		index = (bpp - table[0].bpp) * 2;
   110	
   111		/* requested size is bigger than the table */
   112		if (index >= table_size) {
   113			dm_error("ERROR: Requested rc_calc to find a bpp entry that exceeds the table size\n");
   114			return;
   115		}
   116	
   117		memcpy(qps, table[index].qps, sizeof(qp_set));
   118	}
   119	

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

WARNING: multiple messages have this Message-ID
From: kernel test robot <lkp@intel.com>
To: kbuild-all@lists.01.org
Subject: drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c:81:40: sparse: sparse: Using plain integer as NULL pointer
Date: Tue, 25 Jan 2022 21:42:06 +0800	[thread overview]
Message-ID: <202201252155.rqBWi1tb-lkp@intel.com> (raw)

[-- Attachment #1: Type: text/plain, Size: 6145 bytes --]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a08b41ab9e2e468647f78eb17c28e29b93006394
commit: d738db6883df3e3c513f9e777c842262693f951b drm/amd/display: move FPU associated DSC code to DML folder
date:   3 months ago
config: i386-randconfig-s002-20211122 (https://download.01.org/0day-ci/archive/20220125/202201252155.rqBWi1tb-lkp(a)intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d738db6883df3e3c513f9e777c842262693f951b
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout d738db6883df3e3c513f9e777c842262693f951b
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash

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


sparse warnings: (new ones prefixed by >>)
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c: note: in included file:
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:28:18: sparse: sparse: symbol 'qp_table_422_10bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:61:18: sparse: sparse: symbol 'qp_table_444_8bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:102:18: sparse: sparse: symbol 'qp_table_420_12bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:135:18: sparse: sparse: symbol 'qp_table_444_10bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:188:18: sparse: sparse: symbol 'qp_table_420_8bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:209:18: sparse: sparse: symbol 'qp_table_444_8bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:250:18: sparse: sparse: symbol 'qp_table_444_12bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:315:18: sparse: sparse: symbol 'qp_table_420_12bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:348:18: sparse: sparse: symbol 'qp_table_422_12bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:389:18: sparse: sparse: symbol 'qp_table_422_12bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:430:18: sparse: sparse: symbol 'qp_table_444_12bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:495:18: sparse: sparse: symbol 'qp_table_420_8bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:516:18: sparse: sparse: symbol 'qp_table_422_8bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:541:18: sparse: sparse: symbol 'qp_table_422_10bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:574:16: sparse: sparse: symbol 'qp_table_420_10bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:601:18: sparse: sparse: symbol 'qp_table_420_10bpc_min' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:628:18: sparse: sparse: symbol 'qp_table_444_10bpc_max' was not declared. Should it be static?
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/qp_tables.h:681:18: sparse: sparse: symbol 'qp_table_422_8bpc_max' was not declared. Should it be static?
>> drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c:81:40: sparse: sparse: Using plain integer as NULL pointer
   drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c:106:22: sparse: sparse: Using plain integer as NULL pointer

vim +81 drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c

    73	
    74	static void get_qp_set(qp_set qps, enum colour_mode cm, enum bits_per_comp bpc,
    75			       enum max_min max_min, float bpp)
    76	{
    77		int mode = MODE_SELECT(444, 422, 420);
    78		int sel = table_hash(mode, bpc, max_min);
    79		int table_size = 0;
    80		int index;
  > 81		const struct qp_entry *table = 0L;
    82	
    83		// alias enum
    84		enum { min = DAL_MM_MIN, max = DAL_MM_MAX };
    85		switch (sel) {
    86			TABLE_CASE(444,  8, max);
    87			TABLE_CASE(444,  8, min);
    88			TABLE_CASE(444, 10, max);
    89			TABLE_CASE(444, 10, min);
    90			TABLE_CASE(444, 12, max);
    91			TABLE_CASE(444, 12, min);
    92			TABLE_CASE(422,  8, max);
    93			TABLE_CASE(422,  8, min);
    94			TABLE_CASE(422, 10, max);
    95			TABLE_CASE(422, 10, min);
    96			TABLE_CASE(422, 12, max);
    97			TABLE_CASE(422, 12, min);
    98			TABLE_CASE(420,  8, max);
    99			TABLE_CASE(420,  8, min);
   100			TABLE_CASE(420, 10, max);
   101			TABLE_CASE(420, 10, min);
   102			TABLE_CASE(420, 12, max);
   103			TABLE_CASE(420, 12, min);
   104		}
   105	
   106		if (table == 0)
   107			return;
   108	
   109		index = (bpp - table[0].bpp) * 2;
   110	
   111		/* requested size is bigger than the table */
   112		if (index >= table_size) {
   113			dm_error("ERROR: Requested rc_calc to find a bpp entry that exceeds the table size\n");
   114			return;
   115		}
   116	
   117		memcpy(qps, table[index].qps, sizeof(qp_set));
   118	}
   119	

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

             reply	other threads:[~2022-01-25 13:45 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-25 13:42 kernel test robot [this message]
2022-01-25 13:42 ` drivers/gpu/drm/amd/amdgpu/../display/dc/dml/dsc/rc_calc_fpu.c:81:40: sparse: sparse: Using plain integer as NULL pointer kernel test robot
  -- strict thread matches above, loose matches on Subject: below --
2022-01-25  0:47 kernel test robot
2022-01-25  0:47 ` kernel test robot
2021-11-27 11:44 kernel test robot
2021-11-27 11:44 ` kernel test robot

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