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SubjectRe: [PATCH] SPI LPC information kernel module
Hi Daniel,

I love your patch! Yet something to improve:

[auto build test ERROR on char-misc/char-misc-testing]
[also build test ERROR on soc/for-next linus/master v5.8-rc3 next-20200701]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/0day-ci/linux/commits/Daniel-Gutson/SPI-LPC-information-kernel-module/20200630-070234
base: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git ba2104c24aba1fa7e19d53f08c985526a6786d8b
config: um-allmodconfig (attached as .config)
compiler: gcc-9 (Debian 9.3.0-13) 9.3.0
reproduce (this is a W=1 build):
# save the attached .config to linux build tree
make W=1 ARCH=um

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All error/warnings (new ones prefixed by >>):

32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~
include/linux/compiler.h:372:9: note: in definition of macro '__compiletime_assert'
372 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
392 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/asm-generic/fixmap.h:32:2: note: in expansion of macro 'BUILD_BUG_ON'
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~~~~~~~~~~~
In file included from include/linux/kernel.h:11,
from include/linux/list.h:9,
from include/linux/module.h:12,
from drivers/misc/spi_lpc/spi_lpc_main.c:11:
include/asm-generic/fixmap.h: In function 'fix_to_virt':
include/asm-generic/fixmap.h:32:19: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~
include/linux/compiler.h:372:9: note: in definition of macro '__compiletime_assert'
372 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
392 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/asm-generic/fixmap.h:32:2: note: in expansion of macro 'BUILD_BUG_ON'
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~~~~~~~~~~~
In file included from include/linux/string.h:6,
from include/linux/uuid.h:12,
from include/linux/mod_devicetable.h:13,
from include/linux/pci.h:27,
from drivers/misc/spi_lpc/low_level_access.c:11:
include/asm-generic/fixmap.h: In function 'fix_to_virt':
include/asm-generic/fixmap.h:32:19: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~
include/linux/compiler.h:372:9: note: in definition of macro '__compiletime_assert'
372 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
392 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/asm-generic/fixmap.h:32:2: note: in expansion of macro 'BUILD_BUG_ON'
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~~~~~~~~~~~
In file included from include/linux/uaccess.h:11,
from include/linux/sched/task.h:11,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:33,
from include/linux/huge_mm.h:8,
from include/linux/mm.h:675,
from include/linux/scatterlist.h:8,
from include/linux/dma-mapping.h:11,
from include/linux/pci-dma-compat.h:8,
from include/linux/pci.h:2415,
from drivers/misc/spi_lpc/low_level_access.c:11:
arch/um/include/asm/uaccess.h: In function '__access_ok':
arch/um/include/asm/uaccess.h:17:29: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
17 | (((unsigned long) (addr) >= FIXADDR_USER_START) && \
| ^~
arch/um/include/asm/uaccess.h:45:3: note: in expansion of macro '__access_ok_vsyscall'
45 | __access_ok_vsyscall(addr, size) ||
| ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/uaccess.h:11,
from include/linux/sched/task.h:11,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:33,
from include/linux/debugfs.h:15,
from drivers/misc/eeprom/idt_89hpesx.c:78:
arch/um/include/asm/uaccess.h: In function '__access_ok':
arch/um/include/asm/uaccess.h:17:29: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
17 | (((unsigned long) (addr) >= FIXADDR_USER_START) && \
| ^~
arch/um/include/asm/uaccess.h:45:3: note: in expansion of macro '__access_ok_vsyscall'
45 | __access_ok_vsyscall(addr, size) ||
| ^~~~~~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c: In function 'pci_read_byte':
>> drivers/misc/spi_lpc/low_level_access.c:42:31: error: implicit declaration of function 'pci_find_bus'; did you mean 'pci_find_next_bus'? [-Werror=implicit-function-declaration]
42 | struct pci_bus *found_bus = pci_find_bus(0, bus); \
| ^~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:56:1: note: in expansion of macro 'GENERIC_PCI_READ'
56 | GENERIC_PCI_READ(byte, u8)
| ^~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:42:31: warning: initialization of 'struct pci_bus *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
42 | struct pci_bus *found_bus = pci_find_bus(0, bus); \
| ^~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:56:1: note: in expansion of macro 'GENERIC_PCI_READ'
56 | GENERIC_PCI_READ(byte, u8)
| ^~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:46:10: error: implicit declaration of function 'pci_bus_read_config_byte'; did you mean 'pci_read_config_byte'? [-Werror=implicit-function-declaration]
46 | ret = pci_bus_read_config_##Suffix( \
| ^~~~~~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:56:1: note: in expansion of macro 'GENERIC_PCI_READ'
56 | GENERIC_PCI_READ(byte, u8)
| ^~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c: In function 'pci_read_word':
>> drivers/misc/spi_lpc/low_level_access.c:42:31: warning: initialization of 'struct pci_bus *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
42 | struct pci_bus *found_bus = pci_find_bus(0, bus); \
| ^~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c:57:1: note: in expansion of macro 'GENERIC_PCI_READ'
57 | GENERIC_PCI_READ(word, u16)
| ^~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:46:10: error: implicit declaration of function 'pci_bus_read_config_word'; did you mean 'pci_read_config_word'? [-Werror=implicit-function-declaration]
46 | ret = pci_bus_read_config_##Suffix( \
| ^~~~~~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c:57:1: note: in expansion of macro 'GENERIC_PCI_READ'
57 | GENERIC_PCI_READ(word, u16)
| ^~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c: In function 'pci_read_dword':
>> drivers/misc/spi_lpc/low_level_access.c:42:31: warning: initialization of 'struct pci_bus *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
42 | struct pci_bus *found_bus = pci_find_bus(0, bus); \
| ^~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c:58:1: note: in expansion of macro 'GENERIC_PCI_READ'
58 | GENERIC_PCI_READ(dword, u32)
| ^~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:46:10: error: implicit declaration of function 'pci_bus_read_config_dword'; did you mean 'pci_read_config_dword'? [-Werror=implicit-function-declaration]
46 | ret = pci_bus_read_config_##Suffix( \
| ^~~~~~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c:58:1: note: in expansion of macro 'GENERIC_PCI_READ'
58 | GENERIC_PCI_READ(dword, u32)
| ^~~~~~~~~~~~~~~~
drivers/misc/enclosure.c:115: warning: Function parameter or member 'name' not described in 'enclosure_register'
drivers/misc/enclosure.c:115: warning: Function parameter or member 'cb' not described in 'enclosure_register'
drivers/misc/enclosure.c:283: warning: Function parameter or member 'number' not described in 'enclosure_component_alloc'
drivers/misc/enclosure.c:283: warning: Excess function parameter 'num' description in 'enclosure_component_alloc'
drivers/misc/enclosure.c:363: warning: Function parameter or member 'component' not described in 'enclosure_add_device'
drivers/misc/enclosure.c:363: warning: Excess function parameter 'num' description in 'enclosure_add_device'
drivers/misc/enclosure.c:398: warning: Function parameter or member 'dev' not described in 'enclosure_remove_device'
drivers/misc/enclosure.c:398: warning: Excess function parameter 'num' description in 'enclosure_remove_device'
cc1: some warnings being treated as errors
make[4]: *** [scripts/Makefile.build:280: drivers/misc/spi_lpc/low_level_access.o] Error 1
make[4]: Target '__build' not remade because of errors.
make[3]: *** [scripts/Makefile.build:497: drivers/misc/spi_lpc] Error 2
cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs]
cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs]
make[2]: *** [scripts/Makefile.build:497: drivers/misc] Error 2
make[2]: Target '__build' not remade because of errors.
make[3]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1756: drivers] Error 2
make[1]: Target 'drivers/misc/' not remade because of errors.
--
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~
include/linux/compiler.h:372:9: note: in definition of macro '__compiletime_assert'
372 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
392 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/asm-generic/fixmap.h:32:2: note: in expansion of macro 'BUILD_BUG_ON'
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~~~~~~~~~~~
In file included from include/linux/kernel.h:11,
from include/linux/list.h:9,
from include/linux/module.h:12,
from drivers/misc/spi_lpc/spi_lpc_main.c:11:
include/asm-generic/fixmap.h: In function 'fix_to_virt':
include/asm-generic/fixmap.h:32:19: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~
include/linux/compiler.h:372:9: note: in definition of macro '__compiletime_assert'
372 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
392 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/asm-generic/fixmap.h:32:2: note: in expansion of macro 'BUILD_BUG_ON'
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~~~~~~~~~~~
In file included from include/linux/string.h:6,
from include/linux/uuid.h:12,
from include/linux/mod_devicetable.h:13,
from include/linux/pci.h:27,
from drivers/misc/spi_lpc/low_level_access.c:11:
include/asm-generic/fixmap.h: In function 'fix_to_virt':
include/asm-generic/fixmap.h:32:19: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~
include/linux/compiler.h:372:9: note: in definition of macro '__compiletime_assert'
372 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler.h:392:2: note: in expansion of macro '_compiletime_assert'
392 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:50:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
50 | BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
| ^~~~~~~~~~~~~~~~
include/asm-generic/fixmap.h:32:2: note: in expansion of macro 'BUILD_BUG_ON'
32 | BUILD_BUG_ON(idx >= __end_of_fixed_addresses);
| ^~~~~~~~~~~~
In file included from include/linux/uaccess.h:11,
from include/linux/sched/task.h:11,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:33,
from include/linux/huge_mm.h:8,
from include/linux/mm.h:675,
from include/linux/scatterlist.h:8,
from include/linux/dma-mapping.h:11,
from include/linux/pci-dma-compat.h:8,
from include/linux/pci.h:2415,
from drivers/misc/spi_lpc/low_level_access.c:11:
arch/um/include/asm/uaccess.h: In function '__access_ok':
arch/um/include/asm/uaccess.h:17:29: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
17 | (((unsigned long) (addr) >= FIXADDR_USER_START) && \
| ^~
arch/um/include/asm/uaccess.h:45:3: note: in expansion of macro '__access_ok_vsyscall'
45 | __access_ok_vsyscall(addr, size) ||
| ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/uaccess.h:11,
from include/linux/sched/task.h:11,
from include/linux/sched/signal.h:9,
from include/linux/rcuwait.h:6,
from include/linux/percpu-rwsem.h:7,
from include/linux/fs.h:33,
from include/linux/debugfs.h:15,
from drivers/misc/eeprom/idt_89hpesx.c:78:
arch/um/include/asm/uaccess.h: In function '__access_ok':
arch/um/include/asm/uaccess.h:17:29: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits]
17 | (((unsigned long) (addr) >= FIXADDR_USER_START) && \
| ^~
arch/um/include/asm/uaccess.h:45:3: note: in expansion of macro '__access_ok_vsyscall'
45 | __access_ok_vsyscall(addr, size) ||
| ^~~~~~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c: In function 'pci_read_byte':
>> drivers/misc/spi_lpc/low_level_access.c:42:31: error: implicit declaration of function 'pci_find_bus'; did you mean 'pci_find_next_bus'? [-Werror=implicit-function-declaration]
42 | struct pci_bus *found_bus = pci_find_bus(0, bus); \
| ^~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:56:1: note: in expansion of macro 'GENERIC_PCI_READ'
56 | GENERIC_PCI_READ(byte, u8)
| ^~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:42:31: warning: initialization of 'struct pci_bus *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
42 | struct pci_bus *found_bus = pci_find_bus(0, bus); \
| ^~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:56:1: note: in expansion of macro 'GENERIC_PCI_READ'
56 | GENERIC_PCI_READ(byte, u8)
| ^~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:46:10: error: implicit declaration of function 'pci_bus_read_config_byte'; did you mean 'pci_read_config_byte'? [-Werror=implicit-function-declaration]
46 | ret = pci_bus_read_config_##Suffix( \
| ^~~~~~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:56:1: note: in expansion of macro 'GENERIC_PCI_READ'
56 | GENERIC_PCI_READ(byte, u8)
| ^~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c: In function 'pci_read_word':
>> drivers/misc/spi_lpc/low_level_access.c:42:31: warning: initialization of 'struct pci_bus *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
42 | struct pci_bus *found_bus = pci_find_bus(0, bus); \
| ^~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c:57:1: note: in expansion of macro 'GENERIC_PCI_READ'
57 | GENERIC_PCI_READ(word, u16)
| ^~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:46:10: error: implicit declaration of function 'pci_bus_read_config_word'; did you mean 'pci_read_config_word'? [-Werror=implicit-function-declaration]
46 | ret = pci_bus_read_config_##Suffix( \
| ^~~~~~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c:57:1: note: in expansion of macro 'GENERIC_PCI_READ'
57 | GENERIC_PCI_READ(word, u16)
| ^~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c: In function 'pci_read_dword':
>> drivers/misc/spi_lpc/low_level_access.c:42:31: warning: initialization of 'struct pci_bus *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
42 | struct pci_bus *found_bus = pci_find_bus(0, bus); \
| ^~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c:58:1: note: in expansion of macro 'GENERIC_PCI_READ'
58 | GENERIC_PCI_READ(dword, u32)
| ^~~~~~~~~~~~~~~~
>> drivers/misc/spi_lpc/low_level_access.c:46:10: error: implicit declaration of function 'pci_bus_read_config_dword'; did you mean 'pci_read_config_dword'? [-Werror=implicit-function-declaration]
46 | ret = pci_bus_read_config_##Suffix( \
| ^~~~~~~~~~~~~~~~~~~~
drivers/misc/spi_lpc/low_level_access.c:58:1: note: in expansion of macro 'GENERIC_PCI_READ'
58 | GENERIC_PCI_READ(dword, u32)
| ^~~~~~~~~~~~~~~~
drivers/misc/enclosure.c:115: warning: Function parameter or member 'name' not described in 'enclosure_register'
drivers/misc/enclosure.c:115: warning: Function parameter or member 'cb' not described in 'enclosure_register'
drivers/misc/enclosure.c:283: warning: Function parameter or member 'number' not described in 'enclosure_component_alloc'
drivers/misc/enclosure.c:283: warning: Excess function parameter 'num' description in 'enclosure_component_alloc'
drivers/misc/enclosure.c:363: warning: Function parameter or member 'component' not described in 'enclosure_add_device'
drivers/misc/enclosure.c:363: warning: Excess function parameter 'num' description in 'enclosure_add_device'
drivers/misc/enclosure.c:398: warning: Function parameter or member 'dev' not described in 'enclosure_remove_device'
drivers/misc/enclosure.c:398: warning: Excess function parameter 'num' description in 'enclosure_remove_device'
cc1: some warnings being treated as errors
make[4]: *** [scripts/Makefile.build:280: drivers/misc/spi_lpc/low_level_access.o] Error 1
make[4]: Target '__build' not remade because of errors.
make[3]: *** [scripts/Makefile.build:497: drivers/misc/spi_lpc] Error 2
cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs]
cc1: warning: arch/um/include/uapi: No such file or directory [-Wmissing-include-dirs]
make[2]: *** [scripts/Makefile.build:497: drivers/misc] Error 2
make[2]: Target '__build' not remade because of errors.
make[3]: Target '__build' not remade because of errors.
..

vim +42 drivers/misc/spi_lpc/low_level_access.c

36
37 #define GENERIC_PCI_READ(Suffix, Type) \
38 int pci_read_##Suffix(Type *value, u64 bus, u64 device, u64 function, \
39 u64 offset) \
40 { \
41 int ret; \
> 42 struct pci_bus *found_bus = pci_find_bus(0, bus); \
43 pr_debug("Reading PCI 0x%llx 0x%llx 0x%llx 0x%llx\n", bus, \
44 device, function, offset); \
45 if (found_bus != NULL) { \
> 46 ret = pci_bus_read_config_##Suffix( \
47 found_bus, PCI_DEVFN(device, function), \
48 offset, value); \
49 } else { \
50 pr_err("Couldn't find Bus 0x%llx\n", bus); \
51 ret = -EIO; \
52 } \
53 return ret; \
54 }
55
> 56 GENERIC_PCI_READ(byte, u8)

---
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