* [linux-next:master 14157/14231] kernel/resource.c:505:5: warning: no previous prototype for '__region_intersects'
@ 2021-04-21 21:33 kernel test robot
2021-04-22 0:08 ` Andrew Morton
0 siblings, 1 reply; 2+ messages in thread
From: kernel test robot @ 2021-04-21 21:33 UTC (permalink / raw)
To: Alistair Popple; +Cc: kbuild-all, Linux Memory Management List, Andrew Morton
[-- Attachment #1: Type: text/plain, Size: 2356 bytes --]
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: b74523885a715463203d4ccc3cf8c85952d3701a
commit: edede6a2ecfe8553e8232eb863a7a13ef40da3a2 [14157/14231] kernel/resource: allow region_intersects users to hold resource_lock
config: mips-randconfig-r016-20210421 (attached as .config)
compiler: mips64el-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=edede6a2ecfe8553e8232eb863a7a13ef40da3a2
git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
git fetch --no-tags linux-next master
git checkout edede6a2ecfe8553e8232eb863a7a13ef40da3a2
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> kernel/resource.c:505:5: warning: no previous prototype for '__region_intersects' [-Wmissing-prototypes]
505 | int __region_intersects(resource_size_t start, size_t size, unsigned long flags,
| ^~~~~~~~~~~~~~~~~~~
vim +/__region_intersects +505 kernel/resource.c
504
> 505 int __region_intersects(resource_size_t start, size_t size, unsigned long flags,
506 unsigned long desc)
507 {
508 struct resource res;
509 int type = 0; int other = 0;
510 struct resource *p;
511
512 res.start = start;
513 res.end = start + size - 1;
514
515 for (p = iomem_resource.child; p ; p = p->sibling) {
516 bool is_type = (((p->flags & flags) == flags) &&
517 ((desc == IORES_DESC_NONE) ||
518 (desc == p->desc)));
519
520 if (resource_overlaps(p, &res))
521 is_type ? type++ : other++;
522 }
523
524 if (type == 0)
525 return REGION_DISJOINT;
526
527 if (other == 0)
528 return REGION_INTERSECTS;
529
530 return REGION_MIXED;
531 }
532
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [linux-next:master 14157/14231] kernel/resource.c:505:5: warning: no previous prototype for '__region_intersects'
2021-04-21 21:33 [linux-next:master 14157/14231] kernel/resource.c:505:5: warning: no previous prototype for '__region_intersects' kernel test robot
@ 2021-04-22 0:08 ` Andrew Morton
0 siblings, 0 replies; 2+ messages in thread
From: Andrew Morton @ 2021-04-22 0:08 UTC (permalink / raw)
To: kernel test robot
Cc: Alistair Popple, kbuild-all, Linux Memory Management List
On Thu, 22 Apr 2021 05:33:54 +0800 kernel test robot <lkp@intel.com> wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head: b74523885a715463203d4ccc3cf8c85952d3701a
> commit: edede6a2ecfe8553e8232eb863a7a13ef40da3a2 [14157/14231] kernel/resource: allow region_intersects users to hold resource_lock
> config: mips-randconfig-r016-20210421 (attached as .config)
> compiler: mips64el-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
> wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> chmod +x ~/bin/make.cross
> # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=edede6a2ecfe8553e8232eb863a7a13ef40da3a2
> git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
> git fetch --no-tags linux-next master
> git checkout edede6a2ecfe8553e8232eb863a7a13ef40da3a2
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross W=1 ARCH=mips
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
>
> All warnings (new ones prefixed by >>):
>
> >> kernel/resource.c:505:5: warning: no previous prototype for '__region_intersects' [-Wmissing-prototypes]
> 505 | int __region_intersects(resource_size_t start, size_t size, unsigned long flags,
> | ^~~~~~~~~~~~~~~~~~~
>
Thanks, I made __region_intersects() static.
--- a/kernel/resource.c~kernel-resource-allow-region_intersects-users-to-hold-resource_lock-fix
+++ a/kernel/resource.c
@@ -502,8 +502,8 @@ int __weak page_is_ram(unsigned long pfn
}
EXPORT_SYMBOL_GPL(page_is_ram);
-int __region_intersects(resource_size_t start, size_t size, unsigned long flags,
- unsigned long desc)
+static int __region_intersects(resource_size_t start, size_t size,
+ unsigned long flags, unsigned long desc)
{
struct resource res;
int type = 0; int other = 0;
_
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2021-04-21 21:33 [linux-next:master 14157/14231] kernel/resource.c:505:5: warning: no previous prototype for '__region_intersects' kernel test robot
2021-04-22 0:08 ` Andrew Morton
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