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Date: Tue, 30 Jan 2024 18:24:22 +0800
From: kernel test robot <lkp@intel.com>
To: Ondrej Zary <linux@zary.sk>
Cc: oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
	Damien Le Moal <damien.lemoal@opensource.wdc.com>
Subject: drivers/ata/pata_parport/friq.c:112:63: sparse: sparse: cast to
 restricted __le16
Message-ID: <202401301838.JDzCSLYe-lkp@intel.com>
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MIME-Version: 1.0
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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   861c0981648f5b64c86fd028ee622096eb7af05a
commit: 72f2b0b2185099dce354c805009f591dda3ab73d drivers/block: Move PARIDE protocol modules to drivers/ata/pata_parport
date:   12 months ago
config: m68k-randconfig-r123-20240129 (https://download.01.org/0day-ci/archive/20240130/202401301838.JDzCSLYe-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20240130/202401301838.JDzCSLYe-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401301838.JDzCSLYe-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/ata/pata_parport/friq.c:112:63: sparse: sparse: cast to restricted __le16
>> drivers/ata/pata_parport/friq.c:112:63: sparse: sparse: cast to restricted __le16
>> drivers/ata/pata_parport/friq.c:112:63: sparse: sparse: cast to restricted __le16
>> drivers/ata/pata_parport/friq.c:112:63: sparse: sparse: cast to restricted __le16
   drivers/ata/pata_parport/friq.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

vim +112 drivers/ata/pata_parport/friq.c

^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   80  
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   81          switch(pi->mode) {
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   82  
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   83          case 0: CMD(regr); 
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   84                  for (k=0;k<count;k++) {
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   85                          w2(6); l = r1();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   86                          w2(4); h = r1();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   87                          buf[k] = j44(l,h);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   88                  }
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   89                  w2(4);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   90                  break;
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   91  
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   92          case 1: ph = 2;
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   93                  CMD(regr+0xc0); 
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   94                  w0(0xff);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   95                  for (k=0;k<count;k++) {
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   96                          w2(0xa4 + ph); 
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   97                          buf[k] = r0();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   98                          ph = 2 - ph;
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16   99                  } 
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  100                  w2(0xac); w2(0xa4); w2(4);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  101                  break;
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  102  
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  103  	case 2: CMD(regr+0x80);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  104  		for (k=0;k<count-2;k++) buf[k] = r4();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  105  		w2(0xac); w2(0xa4);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  106  		buf[count-2] = r4();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  107  		buf[count-1] = r4();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  108  		w2(4);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  109  		break;
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  110  
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  111  	case 3: CMD(regr+0x80);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16 @112                  for (k=0;k<(count/2)-1;k++) ((u16 *)buf)[k] = r4w();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  113                  w2(0xac); w2(0xa4);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  114                  buf[count-2] = r4();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  115                  buf[count-1] = r4();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  116                  w2(4);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  117                  break;
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  118  
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  119  	case 4: CMD(regr+0x80);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  120                  for (k=0;k<(count/4)-1;k++) ((u32 *)buf)[k] = r4l();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  121                  buf[count-4] = r4();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  122                  buf[count-3] = r4();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  123                  w2(0xac); w2(0xa4);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  124                  buf[count-2] = r4();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  125                  buf[count-1] = r4();
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  126                  w2(4);
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  127                  break;
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  128  
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  129          }
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  130  }
^1da177e4c3f41 drivers/block/paride/friq.c Linus Torvalds 2005-04-16  131  

:::::: The code at line 112 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

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https://github.com/intel/lkp-tests/wiki