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s390/ipl: cleanup macro usage

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ipl.c uses 3 different macros to create a sysfs show function for ipl
attributes. Define IPL_ATTR_SHOW_FN which is used by all macros.

Reviewed-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Sebastian Ott 2015-03-17 10:36:14 +01:00 committed by Martin Schwidefsky
parent 0f024379ff
commit 3be7ae6350
1 changed files with 11 additions and 19 deletions
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30
arch/s390/kernel/ipl.c
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@ -182,24 +182,21 @@ EXPORT_SYMBOL_GPL(diag308);
/* SYSFS */
#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \
#define IPL_ATTR_SHOW_FN(_prefix, _name, _format, args...) \
static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \
struct kobj_attribute *attr, \
char *page) \
{ \
return sprintf(page, _format, _value); \
} \
return snprintf(page, PAGE_SIZE, _format, ##args); \
}
#define DEFINE_IPL_ATTR_RO(_prefix, _name, _format, _value) \
IPL_ATTR_SHOW_FN(_prefix, _name, _format, _value) \
static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
__ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL);
__ATTR(_name, S_IRUGO, sys_##_prefix##_##_name##_show, NULL)
#define DEFINE_IPL_ATTR_RW(_prefix, _name, _fmt_out, _fmt_in, _value) \
static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \
struct kobj_attribute *attr, \
char *page) \
{ \
return sprintf(page, _fmt_out, \
(unsigned long long) _value); \
} \
IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, (unsigned long long) _value) \
static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
struct kobj_attribute *attr, \
const char *buf, size_t len) \
@ -213,15 +210,10 @@ static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
__ATTR(_name,(S_IRUGO | S_IWUSR), \
sys_##_prefix##_##_name##_show, \
sys_##_prefix##_##_name##_store);
sys_##_prefix##_##_name##_store)
#define DEFINE_IPL_ATTR_STR_RW(_prefix, _name, _fmt_out, _fmt_in, _value)\
static ssize_t sys_##_prefix##_##_name##_show(struct kobject *kobj, \
struct kobj_attribute *attr, \
char *page) \
{ \
return sprintf(page, _fmt_out, _value); \
} \
IPL_ATTR_SHOW_FN(_prefix, _name, _fmt_out, _value) \
static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
struct kobj_attribute *attr, \
const char *buf, size_t len) \
@ -233,7 +225,7 @@ static ssize_t sys_##_prefix##_##_name##_store(struct kobject *kobj, \
static struct kobj_attribute sys_##_prefix##_##_name##_attr = \
__ATTR(_name,(S_IRUGO | S_IWUSR), \
sys_##_prefix##_##_name##_show, \
sys_##_prefix##_##_name##_store);
sys_##_prefix##_##_name##_store)
static void make_attrs_ro(struct attribute **attrs)
{