Re: arch/m68k/include/asm/raw_io.h:39: warning: "__raw_readb" redefined

From: Thomas Zimmermann
Date: Tue Jan 07 2025 - 05:02:05 EST


See https://lore.kernel.org/lkml/20250107095912.130530-1-tzimmermann@xxxxxxx/T/#u for a possible fix.


Am 07.01.25 um 09:57 schrieb kernel test robot:
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: fbfd64d25c7af3b8695201ebc85efe90be28c5a3
commit: 7283f862bd991c8657e9bf1c02db772fcf018f13 drm: Implement DRM aperture helpers under video/
date: 2 years, 6 months ago
config: m68k-randconfig-m031-20211009 (https://download.01.org/0day-ci/archive/20250107/202501071629.DNEswlm8-lkp@xxxxxxxxx/config)
compiler: m68k-linux-gcc (GCC) 12.4.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250107/202501071629.DNEswlm8-lkp@xxxxxxxxx/reproduce)

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/202501071629.DNEswlm8-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

In file included from arch/m68k/include/asm/vga.h:12,
from include/video/vga.h:22,
from include/linux/vgaarb.h:34,
from drivers/video/aperture.c:12:
arch/m68k/include/asm/raw_io.h:39: warning: "__raw_readb" redefined
39 | #define __raw_readb in_8
|
In file included from arch/m68k/include/asm/io.h:6,
from include/linux/io.h:13,
from include/linux/irq.h:20,
from include/asm-generic/hardirq.h:17,
from ./arch/m68k/include/generated/asm/hardirq.h:1,
from include/linux/hardirq.h:11,
from include/linux/interrupt.h:11,
from include/linux/trace_recursion.h:5,
from include/linux/ftrace.h:10,
from include/linux/kprobes.h:28,
from include/linux/kgdb.h:19,
from include/linux/fb.h:6,
from drivers/video/aperture.c:5:
arch/m68k/include/asm/io_no.h:16: note: this is the location of the previous definition
16 | #define __raw_readb(addr) \
|
arch/m68k/include/asm/raw_io.h:40: warning: "__raw_readw" redefined
40 | #define __raw_readw in_be16
|
arch/m68k/include/asm/io_no.h:18: note: this is the location of the previous definition
18 | #define __raw_readw(addr) \
|
arch/m68k/include/asm/raw_io.h:41: warning: "__raw_readl" redefined
41 | #define __raw_readl in_be32
|
arch/m68k/include/asm/io_no.h:20: note: this is the location of the previous definition
20 | #define __raw_readl(addr) \
|
arch/m68k/include/asm/raw_io.h:46: warning: "__raw_writeb" redefined
46 | #define __raw_writeb(val,addr) out_8((addr),(val))
|
arch/m68k/include/asm/io_no.h:23: note: this is the location of the previous definition
23 | #define __raw_writeb(b, addr) (void)((*(__force volatile u8 *) (addr)) = (b))
|
arch/m68k/include/asm/raw_io.h:47: warning: "__raw_writew" redefined
47 | #define __raw_writew(val,addr) out_be16((addr),(val))
|
arch/m68k/include/asm/io_no.h:24: note: this is the location of the previous definition
24 | #define __raw_writew(b, addr) (void)((*(__force volatile u16 *) (addr)) = (b))
|
arch/m68k/include/asm/raw_io.h:48: warning: "__raw_writel" redefined
48 | #define __raw_writel(val,addr) out_be32((addr),(val))
|
arch/m68k/include/asm/io_no.h:25: note: this is the location of the previous definition
25 | #define __raw_writel(b, addr) (void)((*(__force volatile u32 *) (addr)) = (b))
|


vim +/__raw_readb +39 arch/m68k/include/asm/raw_io.h

^1da177e4c3f41 include/asm-m68k/raw_io.h Linus Torvalds 2005-04-16 35
^1da177e4c3f41 include/asm-m68k/raw_io.h Linus Torvalds 2005-04-16 36 #define raw_inb in_8
^1da177e4c3f41 include/asm-m68k/raw_io.h Linus Torvalds 2005-04-16 37 #define raw_inw in_be16
^1da177e4c3f41 include/asm-m68k/raw_io.h Linus Torvalds 2005-04-16 38 #define raw_inl in_be32
f9569e1d154079 include/asm-m68k/raw_io.h Al Viro 2007-07-20 @39 #define __raw_readb in_8
f9569e1d154079 include/asm-m68k/raw_io.h Al Viro 2007-07-20 @40 #define __raw_readw in_be16
f9569e1d154079 include/asm-m68k/raw_io.h Al Viro 2007-07-20 @41 #define __raw_readl in_be32
^1da177e4c3f41 include/asm-m68k/raw_io.h Linus Torvalds 2005-04-16 42
^1da177e4c3f41 include/asm-m68k/raw_io.h Linus Torvalds 2005-04-16 43 #define raw_outb(val,port) out_8((port),(val))
^1da177e4c3f41 include/asm-m68k/raw_io.h Linus Torvalds 2005-04-16 44 #define raw_outw(val,port) out_be16((port),(val))
^1da177e4c3f41 include/asm-m68k/raw_io.h Linus Torvalds 2005-04-16 45 #define raw_outl(val,port) out_be32((port),(val))
f9569e1d154079 include/asm-m68k/raw_io.h Al Viro 2007-07-20 @46 #define __raw_writeb(val,addr) out_8((addr),(val))
f9569e1d154079 include/asm-m68k/raw_io.h Al Viro 2007-07-20 @47 #define __raw_writew(val,addr) out_be16((addr),(val))
f9569e1d154079 include/asm-m68k/raw_io.h Al Viro 2007-07-20 @48 #define __raw_writel(val,addr) out_be32((addr),(val))
^1da177e4c3f41 include/asm-m68k/raw_io.h Linus Torvalds 2005-04-16 49

:::::: The code at line 39 was first introduced by commit
:::::: f9569e1d1540791f664aeb935b1ec11b6e56507c m68k iomem (based on Geert's tree + memcpy_... stuff)

:::::: TO: Al Viro <viro@xxxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxxxxxxxx>


--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)