Re: [PATCH v2 1/2] power/hibernate: Make passing hibernate offsets more friendly

From: kbuild test robot
Date: Wed Mar 28 2018 - 10:02:44 EST


Hi Mario,

I love your patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc7 next-20180328]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Mario-Limonciello/power-hibernate-Make-passing-hibernate-offsets-more-friendly/20180328-212230
config: i386-randconfig-x006-201812 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All errors (new ones prefixed by >>):

kernel/power/hibernate.c: In function 'resume_offset_show':
kernel/power/hibernate.c:1067:25: warning: format '%lu' expects argument of type 'long unsigned int', but argument 3 has type 'sector_t {aka long long unsigned int}' [-Wformat=]
return sprintf(buf, "%lu\n", swsusp_resume_block);
~~^
%llu
kernel/power/hibernate.c: In function 'resume_offset_store':
>> kernel/power/hibernate.c:1074:28: error: passing argument 3 of 'kstrtoul' from incompatible pointer type [-Werror=incompatible-pointer-types]
int rc = kstrtoul(buf, 0, &swsusp_resume_block);
^
In file included from include/linux/list.h:9:0,
from include/linux/preempt.h:11,
from include/linux/spinlock.h:51,
from include/linux/swap.h:5,
from include/linux/suspend.h:5,
from kernel/power/hibernate.c:16:
include/linux/kernel.h:332:32: note: expected 'long unsigned int *' but argument is of type 'sector_t * {aka long long unsigned int *}'
static inline int __must_check kstrtoul(const char *s, unsigned int base, unsigned long *res)
^~~~~~~~
cc1: some warnings being treated as errors

vim +/kstrtoul +1074 kernel/power/hibernate.c

1063
1064 static ssize_t resume_offset_show(struct kobject *kobj,
1065 struct kobj_attribute *attr, char *buf)
1066 {
> 1067 return sprintf(buf, "%lu\n", swsusp_resume_block);
1068 }
1069
1070 static ssize_t resume_offset_store(struct kobject *kobj,
1071 struct kobj_attribute *attr, const char *buf,
1072 size_t n)
1073 {
> 1074 int rc = kstrtoul(buf, 0, &swsusp_resume_block);
1075
1076 if (rc)
1077 return rc;
1078
1079 return n;
1080 }
1081

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