Re: [PATCH] asm-generic: Fix build when __set_fixmap is absent

kbuild test robot
2016-02-09T16:14:28Z

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Hi Mark,

[auto build test ERROR on next-20160209]
[also build test ERROR on v4.5-rc3]
[cannot apply to v4.5-rc3 v4.5-rc2 v4.5-rc1]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url: https://github.com/0day-ci/linux/commits/Mark-Rutland/asm-generic-Fix-build-when-__set_fixmap-is-absent/20160209-223916
config: um-alldefconfig (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=um

All errors (new ones prefixed by >>):

In file included from arch/um/include/asm/fixmap.h:54:0,
from arch/um/include/asm/pgtable.h:11,
from include/linux/mm.h:67,
from include/linux/ring_buffer.h:5,
from include/linux/trace_events.h:5,
from include/trace/syscall.h:6,
from include/linux/syscalls.h:81,
from init/main.c:18:
>> include/asm-generic/fixmap.h:72:6: error: conflicting types for '__set_fixmap'
void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot);
^
In file included from arch/um/include/asm/pgtable.h:11:0,
from include/linux/mm.h:67,
from include/linux/ring_buffer.h:5,
from include/linux/trace_events.h:5,
from include/trace/syscall.h:6,
from include/linux/syscalls.h:81,
from init/main.c:18:
arch/um/include/asm/fixmap.h:39:13: note: previous declaration of '__set_fixmap' was here
extern void __set_fixmap (enum fixed_addresses idx,
^

vim +/__set_fixmap +72 include/asm-generic/fixmap.h

66
67 #ifndef clear_fixmap
68 #define clear_fixmap(idx) \
69 __set_fixmap(idx, 0, FIXMAP_PAGE_CLEAR)
70 #endif
71
> 72 void __set_fixmap(enum fixed_addresses idx, phys_addr_t phys, pgprot_t prot);
73
74 /* Return a pointer with offset calculated */
75 static inline unsigned long __set_fixmap_offset(enum fixed_addresses idx,

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