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Message-ID: <202507011152.ULf4bZsW-lkp@intel.com>
Date: Tue, 1 Jul 2025 12:30:10 +0800
From: kernel test robot <lkp@...el.com>
To: Ryan Chung <seokwoo.chung130@...il.com>, hao.wu@...el.com,
trix@...hat.com, mdf@...nel.org, yilun.xu@...el.com
Cc: oe-kbuild-all@...ts.linux.dev, linux-fpga@...r.kernel.org,
linux-kernel-mentees@...ts.linux.dev, linux-kernel@...r.kernel.org,
Ryan Chung <seokwoo.chung130@...il.com>
Subject: Re: [PATCH] fpga: dfl: Replace scnprintf() with sysfs_emit()
Hi Ryan,
kernel test robot noticed the following build warnings:
[auto build test WARNING on linus/master]
[also build test WARNING on v6.16-rc4 next-20250630]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Ryan-Chung/fpga-dfl-Replace-scnprintf-with-sysfs_emit/20250630-205221
base: linus/master
patch link: https://lore.kernel.org/r/20250630125018.48417-1-seokwoo.chung130%40gmail.com
patch subject: [PATCH] fpga: dfl: Replace scnprintf() with sysfs_emit()
config: x86_64-randconfig-001-20250701 (https://download.01.org/0day-ci/archive/20250701/202507011152.ULf4bZsW-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14+deb12u1) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250701/202507011152.ULf4bZsW-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507011152.ULf4bZsW-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from arch/x86/include/asm/page_types.h:9,
from arch/x86/include/asm/ptrace.h:6,
from arch/x86/include/asm/math_emu.h:5,
from arch/x86/include/asm/processor.h:13,
from arch/x86/include/asm/timex.h:5,
from include/linux/timex.h:67,
from include/linux/time32.h:13,
from include/linux/time.h:60,
from include/linux/stat.h:19,
from include/linux/module.h:13,
from drivers/fpga/dfl-afu-main.c:18:
drivers/fpga/dfl-afu-main.c: In function 'id_show':
>> include/vdso/page.h:15:25: warning: passing argument 2 of 'sysfs_emit' makes pointer from integer without a cast [-Wint-conversion]
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| long unsigned int
drivers/fpga/dfl-afu-main.c:159:32: note: in expansion of macro 'PAGE_SIZE'
159 | return sysfs_emit(buf, PAGE_SIZE, "%d\n", id);
| ^~~~~~~~~
In file included from include/linux/kobject.h:20,
from include/linux/module.h:21:
include/linux/sysfs.h:492:39: note: expected 'const char *' but argument is of type 'long unsigned int'
492 | int sysfs_emit(char *buf, const char *fmt, ...);
| ~~~~~~~~~~~~^~~
drivers/fpga/dfl-afu-main.c: In function 'afu_id_show':
>> include/vdso/page.h:15:25: warning: passing argument 2 of 'sysfs_emit' makes pointer from integer without a cast [-Wint-conversion]
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| long unsigned int
drivers/fpga/dfl-afu-main.c:478:32: note: in expansion of macro 'PAGE_SIZE'
478 | return sysfs_emit(buf, PAGE_SIZE, "%016llx%016llx\n", guidh, guidl);
| ^~~~~~~~~
include/linux/sysfs.h:492:39: note: expected 'const char *' but argument is of type 'long unsigned int'
492 | int sysfs_emit(char *buf, const char *fmt, ...);
| ~~~~~~~~~~~~^~~
--
In file included from arch/x86/include/asm/page_types.h:9,
from arch/x86/include/asm/ptrace.h:6,
from arch/x86/include/asm/math_emu.h:5,
from arch/x86/include/asm/processor.h:13,
from arch/x86/include/asm/timex.h:5,
from include/linux/timex.h:67,
from include/linux/time32.h:13,
from include/linux/time.h:60,
from include/linux/stat.h:19,
from include/linux/module.h:13,
from dfl-afu-main.c:18:
dfl-afu-main.c: In function 'id_show':
>> include/vdso/page.h:15:25: warning: passing argument 2 of 'sysfs_emit' makes pointer from integer without a cast [-Wint-conversion]
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| long unsigned int
dfl-afu-main.c:159:32: note: in expansion of macro 'PAGE_SIZE'
159 | return sysfs_emit(buf, PAGE_SIZE, "%d\n", id);
| ^~~~~~~~~
In file included from include/linux/kobject.h:20,
from include/linux/module.h:21:
include/linux/sysfs.h:492:39: note: expected 'const char *' but argument is of type 'long unsigned int'
492 | int sysfs_emit(char *buf, const char *fmt, ...);
| ~~~~~~~~~~~~^~~
dfl-afu-main.c: In function 'afu_id_show':
>> include/vdso/page.h:15:25: warning: passing argument 2 of 'sysfs_emit' makes pointer from integer without a cast [-Wint-conversion]
15 | #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| |
| long unsigned int
dfl-afu-main.c:478:32: note: in expansion of macro 'PAGE_SIZE'
478 | return sysfs_emit(buf, PAGE_SIZE, "%016llx%016llx\n", guidh, guidl);
| ^~~~~~~~~
include/linux/sysfs.h:492:39: note: expected 'const char *' but argument is of type 'long unsigned int'
492 | int sysfs_emit(char *buf, const char *fmt, ...);
| ~~~~~~~~~~~~^~~
vim +/sysfs_emit +15 include/vdso/page.h
efe8419ae78d65e Vincenzo Frascino 2024-10-14 14
efe8419ae78d65e Vincenzo Frascino 2024-10-14 @15 #define PAGE_SIZE (_AC(1,UL) << CONFIG_PAGE_SHIFT)
efe8419ae78d65e Vincenzo Frascino 2024-10-14 16
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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