linux-next: build failure after merge of the bitmap tree

Stephen Rothwell
2022-07-08T07:47:44Z

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Hi all,

After merging the bitmap tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

lib/bitmap.c:351:6: error: conflicting types for '__bitmap_set'; have 'void(long unsigned int *, unsigned int, unsigned int)'
351 | void __bitmap_set(unsigned long *map, unsigned int start, unsigned int len)
| ^~~~~~~~~~~~
In file included from lib/bitmap.c:7:
include/linux/bitmap.h:167:6: note: previous declaration of '__bitmap_set' with type 'void(long unsigned int *, unsigned int, int)'
167 | void __bitmap_set(unsigned long *map, unsigned int start, int len);
| ^~~~~~~~~~~~
In file included from include/linux/linkage.h:7,
from include/linux/printk.h:8,
from include/asm-generic/bug.h:22,
from arch/powerpc/include/asm/bug.h:158,
from include/linux/bug.h:5,
from lib/bitmap.c:9:
lib/bitmap.c:370:15: error: conflicting types for '__bitmap_set'; have 'void(long unsigned int *, unsigned int, unsigned int)'
370 | EXPORT_SYMBOL(__bitmap_set);
| ^~~~~~~~~~~~
include/linux/export.h:87:28: note: in definition of macro '___EXPORT_SYMBOL'
87 | extern typeof(sym) sym; \
| ^~~
include/linux/export.h:147:41: note: in expansion of macro '__EXPORT_SYMBOL'
147 | #define _EXPORT_SYMBOL(sym, sec) __EXPORT_SYMBOL(sym, sec, "")
| ^~~~~~~~~~~~~~~
include/linux/export.h:150:41: note: in expansion of macro '_EXPORT_SYMBOL'
150 | #define EXPORT_SYMBOL(sym) _EXPORT_SYMBOL(sym, "")
| ^~~~~~~~~~~~~~
lib/bitmap.c:370:1: note: in expansion of macro 'EXPORT_SYMBOL'
370 | EXPORT_SYMBOL(__bitmap_set);
| ^~~~~~~~~~~~~
In file included from lib/bitmap.c:7:
include/linux/bitmap.h:167:6: note: previous declaration of '__bitmap_set' with type 'void(long unsigned int *, unsigned int, int)'
167 | void __bitmap_set(unsigned long *map, unsigned int start, int len);
| ^~~~~~~~~~~~

Caused by commit

aaa4ab5ec044 ("lib/bitmap: Make length parameter `len` unsigned")

I have reverted that commit for today.

--
Cheers,
Stephen Rothwell

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