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Message-ID: <202208110827.RxTOue3F-lkp@intel.com>
Date:   Thu, 11 Aug 2022 08:46:53 +0800
From:   kernel test robot <lkp@...el.com>
To:     Bart Van Assche <bvanassche@....org>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org
Subject: [bvanassche:scsi-const-host-template 12/88]
 drivers/ata/pata_platform.c:221:20: error: passing 'const struct
 scsi_host_template *' to parameter of type 'struct scsi_host_template *'
 discards qualifiers

tree:   https://github.com/bvanassche/linux scsi-const-host-template
head:   13249cc58dd0478af230234f124ec75b5331c348
commit: 21962245b3c73a5e7c9b7b3c129a83f5c1c31608 [12/88] ata
config: powerpc-randconfig-r032-20220810 (https://download.01.org/0day-ci/archive/20220811/202208110827.RxTOue3F-lkp@intel.com/config)
compiler: clang version 16.0.0 (https://github.com/llvm/llvm-project 5f1c7e2cc5a3c07cbc2412e851a7283c1841f520)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/bvanassche/linux/commit/21962245b3c73a5e7c9b7b3c129a83f5c1c31608
        git remote add bvanassche https://github.com/bvanassche/linux
        git fetch --no-tags bvanassche scsi-const-host-template
        git checkout 21962245b3c73a5e7c9b7b3c129a83f5c1c31608
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=powerpc SHELL=/bin/bash drivers/ata/

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

All errors (new ones prefixed by >>):

   arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:220:1: note: expanded from here
   __do_insw
   ^
   arch/powerpc/include/asm/io.h:578:56: note: expanded from macro '__do_insw'
   #define __do_insw(p, b, n)      readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/ata/pata_platform.c:16:
   In file included from include/linux/blkdev.h:9:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/powerpc/include/asm/hardirq.h:6:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:222:1: note: expanded from here
   __do_insl
   ^
   arch/powerpc/include/asm/io.h:579:56: note: expanded from macro '__do_insl'
   #define __do_insl(p, b, n)      readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/ata/pata_platform.c:16:
   In file included from include/linux/blkdev.h:9:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/powerpc/include/asm/hardirq.h:6:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:224:1: note: expanded from here
   __do_outsb
   ^
   arch/powerpc/include/asm/io.h:580:58: note: expanded from macro '__do_outsb'
   #define __do_outsb(p, b, n)     writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/ata/pata_platform.c:16:
   In file included from include/linux/blkdev.h:9:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/powerpc/include/asm/hardirq.h:6:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:226:1: note: expanded from here
   __do_outsw
   ^
   arch/powerpc/include/asm/io.h:581:58: note: expanded from macro '__do_outsw'
   #define __do_outsw(p, b, n)     writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/ata/pata_platform.c:16:
   In file included from include/linux/blkdev.h:9:
   In file included from include/linux/blk_types.h:10:
   In file included from include/linux/bvec.h:10:
   In file included from include/linux/highmem.h:11:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/powerpc/include/asm/hardirq.h:6:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:228:1: note: expanded from here
   __do_outsl
   ^
   arch/powerpc/include/asm/io.h:582:58: note: expanded from macro '__do_outsl'
   #define __do_outsl(p, b, n)     writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
>> drivers/ata/pata_platform.c:221:20: error: passing 'const struct scsi_host_template *' to parameter of type 'struct scsi_host_template *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
                                        pio_mask, &pata_platform_sht, false);
                                                  ^~~~~~~~~~~~~~~~~~
   drivers/ata/pata_platform.c:183:19: note: passing argument to parameter here
   EXPORT_SYMBOL_GPL(__pata_platform_probe);
                     ^
   6 warnings and 1 error generated.
--
   In file included from drivers/ata/pata_of_platform.c:11:
   In file included from include/linux/of_address.h:7:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:43:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insb, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:141:1: note: expanded from here
   __do_insb
   ^
   arch/powerpc/include/asm/io.h:577:56: note: expanded from macro '__do_insb'
   #define __do_insb(p, b, n)      readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/ata/pata_of_platform.c:11:
   In file included from include/linux/of_address.h:7:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:143:1: note: expanded from here
   __do_insw
   ^
   arch/powerpc/include/asm/io.h:578:56: note: expanded from macro '__do_insw'
   #define __do_insw(p, b, n)      readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/ata/pata_of_platform.c:11:
   In file included from include/linux/of_address.h:7:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:145:1: note: expanded from here
   __do_insl
   ^
   arch/powerpc/include/asm/io.h:579:56: note: expanded from macro '__do_insl'
   #define __do_insl(p, b, n)      readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/ata/pata_of_platform.c:11:
   In file included from include/linux/of_address.h:7:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:147:1: note: expanded from here
   __do_outsb
   ^
   arch/powerpc/include/asm/io.h:580:58: note: expanded from macro '__do_outsb'
   #define __do_outsb(p, b, n)     writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/ata/pata_of_platform.c:11:
   In file included from include/linux/of_address.h:7:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:149:1: note: expanded from here
   __do_outsw
   ^
   arch/powerpc/include/asm/io.h:581:58: note: expanded from macro '__do_outsw'
   #define __do_outsw(p, b, n)     writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
   In file included from drivers/ata/pata_of_platform.c:11:
   In file included from include/linux/of_address.h:7:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:640:
   arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:637:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:151:1: note: expanded from here
   __do_outsl
   ^
   arch/powerpc/include/asm/io.h:582:58: note: expanded from macro '__do_outsl'
   #define __do_outsl(p, b, n)     writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
>> drivers/ata/pata_of_platform.c:76:31: error: passing 'const struct scsi_host_template *' to parameter of type 'struct scsi_host_template *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers]
                                        reg_shift, pio_mask, &pata_platform_sht,
                                                             ^~~~~~~~~~~~~~~~~~
   include/linux/ata_platform.h:22:33: note: passing argument to parameter 'sht' here
                                    struct scsi_host_template *sht,
                                                               ^
   6 warnings and 1 error generated.


vim +221 drivers/ata/pata_platform.c

a20c9e820864e1 Paul Mundt         2006-10-27  184  
0ec24914675c48 Greg Kroah-Hartman 2012-12-21  185  static int pata_platform_probe(struct platform_device *pdev)
cf03613e9662c2 Anton Vorontsov    2008-01-09  186  {
cf03613e9662c2 Anton Vorontsov    2008-01-09  187  	struct resource *io_res;
cf03613e9662c2 Anton Vorontsov    2008-01-09  188  	struct resource *ctl_res;
cf03613e9662c2 Anton Vorontsov    2008-01-09  189  	struct resource *irq_res;
61b8c345aa8c50 Jingoo Han         2013-07-30  190  	struct pata_platform_info *pp_info = dev_get_platdata(&pdev->dev);
cf03613e9662c2 Anton Vorontsov    2008-01-09  191  
cf03613e9662c2 Anton Vorontsov    2008-01-09  192  	/*
cf03613e9662c2 Anton Vorontsov    2008-01-09  193  	 * Simple resource validation ..
cf03613e9662c2 Anton Vorontsov    2008-01-09  194  	 */
cf03613e9662c2 Anton Vorontsov    2008-01-09  195  	if ((pdev->num_resources != 3) && (pdev->num_resources != 2)) {
cf03613e9662c2 Anton Vorontsov    2008-01-09  196  		dev_err(&pdev->dev, "invalid number of resources\n");
cf03613e9662c2 Anton Vorontsov    2008-01-09  197  		return -EINVAL;
cf03613e9662c2 Anton Vorontsov    2008-01-09  198  	}
cf03613e9662c2 Anton Vorontsov    2008-01-09  199  
cf03613e9662c2 Anton Vorontsov    2008-01-09  200  	/*
cf03613e9662c2 Anton Vorontsov    2008-01-09  201  	 * Get the I/O base first
cf03613e9662c2 Anton Vorontsov    2008-01-09  202  	 */
8818a5342cb499 Lad Prabhakar      2022-01-17  203  	io_res = platform_get_mem_or_io(pdev, 0);
8818a5342cb499 Lad Prabhakar      2022-01-17  204  	if (!io_res)
cf03613e9662c2 Anton Vorontsov    2008-01-09  205  		return -EINVAL;
cf03613e9662c2 Anton Vorontsov    2008-01-09  206  
cf03613e9662c2 Anton Vorontsov    2008-01-09  207  	/*
cf03613e9662c2 Anton Vorontsov    2008-01-09  208  	 * Then the CTL base
cf03613e9662c2 Anton Vorontsov    2008-01-09  209  	 */
8818a5342cb499 Lad Prabhakar      2022-01-17  210  	ctl_res = platform_get_mem_or_io(pdev, 1);
8818a5342cb499 Lad Prabhakar      2022-01-17  211  	if (!ctl_res)
cf03613e9662c2 Anton Vorontsov    2008-01-09  212  		return -EINVAL;
cf03613e9662c2 Anton Vorontsov    2008-01-09  213  
cf03613e9662c2 Anton Vorontsov    2008-01-09  214  	/*
cf03613e9662c2 Anton Vorontsov    2008-01-09  215  	 * And the IRQ
cf03613e9662c2 Anton Vorontsov    2008-01-09  216  	 */
cf03613e9662c2 Anton Vorontsov    2008-01-09  217  	irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
cf03613e9662c2 Anton Vorontsov    2008-01-09  218  
cf03613e9662c2 Anton Vorontsov    2008-01-09  219  	return __pata_platform_probe(&pdev->dev, io_res, ctl_res, irq_res,
cf03613e9662c2 Anton Vorontsov    2008-01-09  220  				     pp_info ? pp_info->ioport_shift : 0,
f3d5e4f18dba18 Alexander Shiyan   2019-01-19 @221  				     pio_mask, &pata_platform_sht, false);
cf03613e9662c2 Anton Vorontsov    2008-01-09  222  }
cf03613e9662c2 Anton Vorontsov    2008-01-09  223  

:::::: The code at line 221 was first introduced by commit
:::::: f3d5e4f18dba18d7c2303dda68b9dbcf5ccc05cd ata: pata_of_platform: Allow to use 16-bit wide data transfer

:::::: TO: Alexander Shiyan <shc_work@...l.ru>
:::::: CC: Jens Axboe <axboe@...nel.dk>

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

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