Re: [PATCH v6 10/19] s390: mm: Convert to GENERIC_IOREMAP

From: kernel test robot
Date: Fri Jun 09 2023 - 11:42:38 EST

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In reply to: Baoquan He: "[PATCH v6 10/19] s390: mm: Convert to GENERIC_IOREMAP"
Next in thread: kernel test robot: "Re: [PATCH v6 10/19] s390: mm: Convert to GENERIC_IOREMAP"
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Hi Baoquan,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]

url: https://github.com/intel-lab-lkp/linux/commits/Baoquan-He/asm-generic-iomap-h-remove-ARCH_HAS_IOREMAP_xx-macros/20230609-160014
base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/r/20230609075528.9390-11-bhe%40redhat.com
patch subject: [PATCH v6 10/19] s390: mm: Convert to GENERIC_IOREMAP
config: s390-randconfig-r014-20230608 (https://download.01.org/0day-ci/archive/20230609/202306092349.88mhfjhr-lkp@xxxxxxxxx/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build):
mkdir -p ~/bin
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
git remote add akpm-mm https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git
git fetch akpm-mm mm-everything
git checkout akpm-mm/mm-everything
b4 shazam https://lore.kernel.org/r/20230609075528.9390-11-bhe@xxxxxxxxxx
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=s390 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang ~/bin/make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/pcmcia/

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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202306092349.88mhfjhr-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from drivers/pcmcia/cistpl.c:21:
In file included from include/linux/pci.h:39:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:78:
include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
547 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
560 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from drivers/pcmcia/cistpl.c:21:
In file included from include/linux/pci.h:39:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:78:
include/asm-generic/io.h:573:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
573 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from drivers/pcmcia/cistpl.c:21:
In file included from include/linux/pci.h:39:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:78:
include/asm-generic/io.h:584:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
584 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:594:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
594 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:604:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
604 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:692:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
692 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:700:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
700 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:708:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
708 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:717:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
717 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:726:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
726 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
735 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> drivers/pcmcia/cistpl.c:72:3: error: call to undeclared function 'iounmap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
72 | iounmap(s->cis_virt);
| ^
arch/s390/include/asm/io.h:29:17: note: expanded from macro 'iounmap'
29 | #define iounmap iounmap
| ^
drivers/pcmcia/cistpl.c:72:3: note: did you mean 'vunmap'?
arch/s390/include/asm/io.h:29:17: note: expanded from macro 'iounmap'
29 | #define iounmap iounmap
| ^
include/linux/vmalloc.h:167:13: note: 'vunmap' declared here
167 | extern void vunmap(const void *addr);
| ^
>> drivers/pcmcia/cistpl.c:103:17: error: call to undeclared function 'ioremap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
103 | s->cis_virt = ioremap(mem->res->start, s->map_size);
| ^
>> drivers/pcmcia/cistpl.c:103:15: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
103 | s->cis_virt = ioremap(mem->res->start, s->map_size);
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/pcmcia/cistpl.c:110:3: error: call to undeclared function 'iounmap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
110 | iounmap(s->cis_virt);
| ^
arch/s390/include/asm/io.h:29:17: note: expanded from macro 'iounmap'
29 | #define iounmap iounmap
| ^
drivers/pcmcia/cistpl.c:117:4: error: call to undeclared function 'iounmap'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
117 | iounmap(s->cis_virt);
| ^
arch/s390/include/asm/io.h:29:17: note: expanded from macro 'iounmap'
29 | #define iounmap iounmap
| ^
drivers/pcmcia/cistpl.c:118:15: error: incompatible integer to pointer conversion assigning to 'void *' from 'int' [-Wint-conversion]
118 | s->cis_virt = ioremap(mem->static_start, s->map_size);
| ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
12 warnings and 6 errors generated.

vim +/iounmap +72 drivers/pcmcia/cistpl.c

^1da177e4c3f41 Linus Torvalds 2005-04-16 60
^1da177e4c3f41 Linus Torvalds 2005-04-16 61 void release_cis_mem(struct pcmcia_socket *s)
^1da177e4c3f41 Linus Torvalds 2005-04-16 62 {
6b8e087b86c59c Dominik Brodowski 2010-01-12 63 mutex_lock(&s->ops_mutex);
^1da177e4c3f41 Linus Torvalds 2005-04-16 64 if (s->cis_mem.flags & MAP_ACTIVE) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 65 s->cis_mem.flags &= ~MAP_ACTIVE;
^1da177e4c3f41 Linus Torvalds 2005-04-16 66 s->ops->set_mem_map(s, &s->cis_mem);
^1da177e4c3f41 Linus Torvalds 2005-04-16 67 if (s->cis_mem.res) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 68 release_resource(s->cis_mem.res);
^1da177e4c3f41 Linus Torvalds 2005-04-16 69 kfree(s->cis_mem.res);
^1da177e4c3f41 Linus Torvalds 2005-04-16 70 s->cis_mem.res = NULL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 71 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 @72 iounmap(s->cis_virt);
^1da177e4c3f41 Linus Torvalds 2005-04-16 73 s->cis_virt = NULL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 74 }
6b8e087b86c59c Dominik Brodowski 2010-01-12 75 mutex_unlock(&s->ops_mutex);
^1da177e4c3f41 Linus Torvalds 2005-04-16 76 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 77
cc448baf85c8f2 Lee Jones 2021-03-12 78 /*
6e83ee075ed749 Dominik Brodowski 2010-03-02 79 * set_cis_map() - map the card memory at "card_offset" into virtual space.
6e83ee075ed749 Dominik Brodowski 2010-03-02 80 *
^1da177e4c3f41 Linus Torvalds 2005-04-16 81 * If flags & MAP_ATTRIB, map the attribute space, otherwise
^1da177e4c3f41 Linus Torvalds 2005-04-16 82 * map the memory space.
7ab24855482fbc Dominik Brodowski 2010-02-17 83 *
7ab24855482fbc Dominik Brodowski 2010-02-17 84 * Must be called with ops_mutex held.
^1da177e4c3f41 Linus Torvalds 2005-04-16 85 */
6e83ee075ed749 Dominik Brodowski 2010-03-02 86 static void __iomem *set_cis_map(struct pcmcia_socket *s,
6e83ee075ed749 Dominik Brodowski 2010-03-02 87 unsigned int card_offset, unsigned int flags)
^1da177e4c3f41 Linus Torvalds 2005-04-16 88 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 89 pccard_mem_map *mem = &s->cis_mem;
2ad0a0a793cbd8 Dominik Brodowski 2005-06-27 90 int ret;
2ad0a0a793cbd8 Dominik Brodowski 2005-06-27 91
2e5a3e79091615 Dominik Brodowski 2005-07-28 92 if (!(s->features & SS_CAP_STATIC_MAP) && (mem->res == NULL)) {
6e83ee075ed749 Dominik Brodowski 2010-03-02 93 mem->res = pcmcia_find_mem_region(0, s->map_size,
6e83ee075ed749 Dominik Brodowski 2010-03-02 94 s->map_size, 0, s);
^1da177e4c3f41 Linus Torvalds 2005-04-16 95 if (mem->res == NULL) {
f2e6cf76751d47 Joe Perches 2014-10-10 96 dev_notice(&s->dev, "cs: unable to map card memory!\n");
^1da177e4c3f41 Linus Torvalds 2005-04-16 97 return NULL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 98 }
2e5a3e79091615 Dominik Brodowski 2005-07-28 99 s->cis_virt = NULL;
^1da177e4c3f41 Linus Torvalds 2005-04-16 100 }
2e5a3e79091615 Dominik Brodowski 2005-07-28 101
2e5a3e79091615 Dominik Brodowski 2005-07-28 102 if (!(s->features & SS_CAP_STATIC_MAP) && (!s->cis_virt))
2e5a3e79091615 Dominik Brodowski 2005-07-28 @103 s->cis_virt = ioremap(mem->res->start, s->map_size);
2e5a3e79091615 Dominik Brodowski 2005-07-28 104
^1da177e4c3f41 Linus Torvalds 2005-04-16 105 mem->card_start = card_offset;
^1da177e4c3f41 Linus Torvalds 2005-04-16 106 mem->flags = flags;
2e5a3e79091615 Dominik Brodowski 2005-07-28 107
2ad0a0a793cbd8 Dominik Brodowski 2005-06-27 108 ret = s->ops->set_mem_map(s, mem);
2ad0a0a793cbd8 Dominik Brodowski 2005-06-27 109 if (ret) {
2ad0a0a793cbd8 Dominik Brodowski 2005-06-27 110 iounmap(s->cis_virt);
2e5a3e79091615 Dominik Brodowski 2005-07-28 111 s->cis_virt = NULL;
2ad0a0a793cbd8 Dominik Brodowski 2005-06-27 112 return NULL;
2ad0a0a793cbd8 Dominik Brodowski 2005-06-27 113 }
2ad0a0a793cbd8 Dominik Brodowski 2005-06-27 114
^1da177e4c3f41 Linus Torvalds 2005-04-16 115 if (s->features & SS_CAP_STATIC_MAP) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 116 if (s->cis_virt)
^1da177e4c3f41 Linus Torvalds 2005-04-16 117 iounmap(s->cis_virt);
^1da177e4c3f41 Linus Torvalds 2005-04-16 118 s->cis_virt = ioremap(mem->static_start, s->map_size);
^1da177e4c3f41 Linus Torvalds 2005-04-16 119 }
2e5a3e79091615 Dominik Brodowski 2005-07-28 120
^1da177e4c3f41 Linus Torvalds 2005-04-16 121 return s->cis_virt;
^1da177e4c3f41 Linus Torvalds 2005-04-16 122 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 123

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In reply to: Baoquan He: "[PATCH v6 10/19] s390: mm: Convert to GENERIC_IOREMAP"
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