drivers/block/paride/epia.c:183:59: sparse: sparse: cast to restricted __le16

From: kernel test robot
Date: Sun Jan 29 2023 - 05:29:43 EST

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Hi Geert,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: c96618275234ad03d44eafe9f8844305bb44fda4
commit: 30b5e6ef4a32ea4985b99200e06d6660a69f9246 m68k: atari: Make Atari ROM port I/O write macros return void
date: 8 months ago
config: m68k-randconfig-s052-20230129 (https://download.01.org/0day-ci/archive/20230129/202301291805.K0QIVz4B-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 12.1.0
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: v0.6.4-39-gce1a6720-dirty
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=30b5e6ef4a32ea4985b99200e06d6660a69f9246
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 30b5e6ef4a32ea4985b99200e06d6660a69f9246
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=m68k olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=m68k SHELL=/bin/bash drivers/block/paride/ drivers/comedi/drivers/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@xxxxxxxxx>

sparse warnings: (new ones prefixed by >>)
>> drivers/block/paride/epia.c:183:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/epia.c:183:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/epia.c:183:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/epia.c:183:59: sparse: sparse: cast to restricted __le16
drivers/block/paride/epia.c: note: in included file (through arch/m68k/include/asm/io.h):
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
--
>> drivers/block/paride/bpck.c:182:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/bpck.c:182:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/bpck.c:182:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/bpck.c:182:59: sparse: sparse: cast to restricted __le16
drivers/block/paride/bpck.c: note: in included file (through arch/m68k/include/asm/io.h):
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
drivers/block/paride/bpck.c:323:72: sparse: sparse: cast to restricted __le16
drivers/block/paride/bpck.c:323:72: sparse: sparse: cast to restricted __le16
drivers/block/paride/bpck.c:323:72: sparse: sparse: cast to restricted __le16
drivers/block/paride/bpck.c:323:72: sparse: sparse: cast to restricted __le16
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
--
>> drivers/block/paride/kbic.c:58:21: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/kbic.c:58:21: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/kbic.c:58:21: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/kbic.c:58:21: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:156:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:156:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:156:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:156:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:156:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:156:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:156:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:156:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:157:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:157:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:157:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:157:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:157:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:157:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:157:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:157:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:159:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:159:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:159:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:159:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:159:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:159:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:159:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:159:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:160:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:160:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:160:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:160:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:160:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:160:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:160:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:160:48: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:179:59: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:179:59: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:179:59: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c:179:59: sparse: sparse: cast to restricted __le16
drivers/block/paride/kbic.c: note: in included file (through arch/m68k/include/asm/io.h):
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
--
>> drivers/block/paride/dstr.c:145:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/dstr.c:145:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/dstr.c:145:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/dstr.c:145:59: sparse: sparse: cast to restricted __le16
drivers/block/paride/dstr.c: note: in included file (through arch/m68k/include/asm/io.h):
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
--
>> drivers/block/paride/on26.c:221:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/on26.c:221:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/on26.c:221:59: sparse: sparse: cast to restricted __le16
>> drivers/block/paride/on26.c:221:59: sparse: sparse: cast to restricted __le16
drivers/block/paride/on26.c: note: in included file (through arch/m68k/include/asm/io.h):
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
arch/m68k/include/asm/io_mm.h:166:21: sparse: sparse: Using plain integer as NULL pointer
--
>> drivers/comedi/drivers/ni_at_ao.c:159:19: sparse: sparse: cast to restricted __le16
>> drivers/comedi/drivers/ni_at_ao.c:159:19: sparse: sparse: cast to restricted __le16
>> drivers/comedi/drivers/ni_at_ao.c:159:19: sparse: sparse: cast to restricted __le16
>> drivers/comedi/drivers/ni_at_ao.c:159:19: sparse: sparse: cast to restricted __le16
drivers/comedi/drivers/ni_at_ao.c:282:9: sparse: sparse: cast to restricted __le16
drivers/comedi/drivers/ni_at_ao.c:282:9: sparse: sparse: cast to restricted __le16
drivers/comedi/drivers/ni_at_ao.c:282:9: sparse: sparse: cast to restricted __le16
drivers/comedi/drivers/ni_at_ao.c:282:9: sparse: sparse: cast to restricted __le16

vim +183 drivers/block/paride/epia.c

^1da177e4c3f41 Linus Torvalds 2005-04-16 139
^1da177e4c3f41 Linus Torvalds 2005-04-16 140 switch (pi->mode) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 141
^1da177e4c3f41 Linus Torvalds 2005-04-16 142 case 0: w0(0x81); w2(1); w2(3); w0(0xc1);
^1da177e4c3f41 Linus Torvalds 2005-04-16 143 ph = 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 144 for (k=0;k<count;k++) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 145 w2(2+ph); a = r1();
^1da177e4c3f41 Linus Torvalds 2005-04-16 146 w2(4+ph); b = r1();
^1da177e4c3f41 Linus Torvalds 2005-04-16 147 buf[k] = j44(a,b);
^1da177e4c3f41 Linus Torvalds 2005-04-16 148 ph = 1 - ph;
^1da177e4c3f41 Linus Torvalds 2005-04-16 149 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 150 w0(0); w2(4);
^1da177e4c3f41 Linus Torvalds 2005-04-16 151 break;
^1da177e4c3f41 Linus Torvalds 2005-04-16 152
^1da177e4c3f41 Linus Torvalds 2005-04-16 153 case 1: w0(0x91); w2(1); w0(0x10); w2(3);
^1da177e4c3f41 Linus Torvalds 2005-04-16 154 w0(0x51); w2(5); w0(0xd1);
^1da177e4c3f41 Linus Torvalds 2005-04-16 155 ph = 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 156 for (k=0;k<count;k++) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 157 w2(4+ph);
^1da177e4c3f41 Linus Torvalds 2005-04-16 158 a = r1(); b = r2();
^1da177e4c3f41 Linus Torvalds 2005-04-16 159 buf[k] = j53(a,b);
^1da177e4c3f41 Linus Torvalds 2005-04-16 160 ph = 1 - ph;
^1da177e4c3f41 Linus Torvalds 2005-04-16 161 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 162 w0(0); w2(4);
^1da177e4c3f41 Linus Torvalds 2005-04-16 163 break;
^1da177e4c3f41 Linus Torvalds 2005-04-16 164
^1da177e4c3f41 Linus Torvalds 2005-04-16 165 case 2: w0(0x89); w2(1); w2(0x23); w2(0x21);
^1da177e4c3f41 Linus Torvalds 2005-04-16 166 ph = 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 167 for (k=0;k<count;k++) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 168 w2(0x24+ph);
^1da177e4c3f41 Linus Torvalds 2005-04-16 169 buf[k] = r0();
^1da177e4c3f41 Linus Torvalds 2005-04-16 170 ph = 1 - ph;
^1da177e4c3f41 Linus Torvalds 2005-04-16 171 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 172 w2(6); w2(4);
^1da177e4c3f41 Linus Torvalds 2005-04-16 173 break;
^1da177e4c3f41 Linus Torvalds 2005-04-16 174
^1da177e4c3f41 Linus Torvalds 2005-04-16 175 case 3: if (count > 512) WR(0x84,3);
^1da177e4c3f41 Linus Torvalds 2005-04-16 176 w3(0); w2(0x24);
^1da177e4c3f41 Linus Torvalds 2005-04-16 177 for (k=0;k<count;k++) buf[k] = r4();
^1da177e4c3f41 Linus Torvalds 2005-04-16 178 w2(4); WR(0x84,0);
^1da177e4c3f41 Linus Torvalds 2005-04-16 179 break;
^1da177e4c3f41 Linus Torvalds 2005-04-16 180
^1da177e4c3f41 Linus Torvalds 2005-04-16 181 case 4: if (count > 512) WR(0x84,3);
^1da177e4c3f41 Linus Torvalds 2005-04-16 182 w3(0); w2(0x24);
^1da177e4c3f41 Linus Torvalds 2005-04-16 @183 for (k=0;k<count/2;k++) ((u16 *)buf)[k] = r4w();
^1da177e4c3f41 Linus Torvalds 2005-04-16 184 w2(4); WR(0x84,0);
^1da177e4c3f41 Linus Torvalds 2005-04-16 185 break;
^1da177e4c3f41 Linus Torvalds 2005-04-16 186
^1da177e4c3f41 Linus Torvalds 2005-04-16 187 case 5: if (count > 512) WR(0x84,3);
^1da177e4c3f41 Linus Torvalds 2005-04-16 188 w3(0); w2(0x24);
^1da177e4c3f41 Linus Torvalds 2005-04-16 189 for (k=0;k<count/4;k++) ((u32 *)buf)[k] = r4l();
^1da177e4c3f41 Linus Torvalds 2005-04-16 190 w2(4); WR(0x84,0);
^1da177e4c3f41 Linus Torvalds 2005-04-16 191 break;
^1da177e4c3f41 Linus Torvalds 2005-04-16 192
^1da177e4c3f41 Linus Torvalds 2005-04-16 193 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 194 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 195

:::::: The code at line 183 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxx>

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests

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