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Message-ID: <202312151114.XNGZXP20-lkp@intel.com>
Date: Fri, 15 Dec 2023 11:08:02 +0800
From: kernel test robot <lkp@...el.com>
To: Ondrej Zary <linux@...y.sk>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
	Damien Le Moal <damien.lemoal@...nsource.wdc.com>
Subject: drivers/ata/pata_parport/comm.c:135:59: sparse: sparse: cast to
 restricted __le16

Hi Ondrej,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   976600c6da56c488776c9ee2a5733ae9736e2a75
commit: 72f2b0b2185099dce354c805009f591dda3ab73d drivers/block: Move PARIDE protocol modules to drivers/ata/pata_parport
date:   11 months ago
config: m68k-randconfig-r113-20231215 (https://download.01.org/0day-ci/archive/20231215/202312151114.XNGZXP20-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231215/202312151114.XNGZXP20-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312151114.XNGZXP20-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> drivers/ata/pata_parport/comm.c:135:59: sparse: sparse: cast to restricted __le16
>> drivers/ata/pata_parport/comm.c:135:59: sparse: sparse: cast to restricted __le16
>> drivers/ata/pata_parport/comm.c:135:59: sparse: sparse: cast to restricted __le16
>> drivers/ata/pata_parport/comm.c:135:59: sparse: sparse: cast to restricted __le16
   drivers/ata/pata_parport/comm.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/ata/pata_parport/epat.c:146:62: sparse: sparse: cast to restricted __le16
>> drivers/ata/pata_parport/epat.c:146:62: sparse: sparse: cast to restricted __le16
>> drivers/ata/pata_parport/epat.c:146:62: sparse: sparse: cast to restricted __le16
>> drivers/ata/pata_parport/epat.c:146:62: sparse: sparse: cast to restricted __le16
   drivers/ata/pata_parport/epat.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 +135 drivers/ata/pata_parport/comm.c

^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  111  
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  112          switch (pi->mode) {
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  113          
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  114          case 0: w0(0x48); P1;
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  115                  for(i=0;i<count;i++) {
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  116                          w0(0); w2(6); l = r1();
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  117                          w0(0x80); h = r1(); w2(4);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  118                          buf[i] = j44(l,h);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  119                  }
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  120                  break;
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  121  
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  122          case 1: w0(0x68); P1; w0(0);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  123                  for(i=0;i<count;i++) {
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  124                          w2(0x26); buf[i] = r0(); w2(0x24);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  125                  }
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  126  		w2(4);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  127  		break;
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  128  		
10e705f83c3e79 drivers/block/paride/comm.c Takashi Iwai   2006-03-24  129  	case 2: w3(0x68); (void)r1(); w2(0x24);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  130  		for (i=0;i<count;i++) buf[i] = r4();
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  131  		w2(4);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  132  		break;
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  133  
10e705f83c3e79 drivers/block/paride/comm.c Takashi Iwai   2006-03-24  134          case 3: w3(0x68); (void)r1(); w2(0x24);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16 @135                  for (i=0;i<count/2;i++) ((u16 *)buf)[i] = r4w();
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  136                  w2(4);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  137                  break;
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  138  
10e705f83c3e79 drivers/block/paride/comm.c Takashi Iwai   2006-03-24  139          case 4: w3(0x68); (void)r1(); w2(0x24);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  140                  for (i=0;i<count/4;i++) ((u32 *)buf)[i] = r4l();
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  141                  w2(4);
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  142                  break;
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  143  		
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  144  	}
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  145  }
^1da177e4c3f41 drivers/block/paride/comm.c Linus Torvalds 2005-04-16  146  

:::::: The code at line 135 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>

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

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