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PM / sleep: Add support for read-only sysfs attributes

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Some sysfs attributes in /sys/power/ should really be read-only,
so add support for that, convert those attributes to read-only
and drop the stub .show() routines from them.

Original-by: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Rafael J. Wysocki
2016-01-02 03:09:16 +01:00
parent 013c074f86
commit a1e9ca6967
2 changed files with 11 additions and 15 deletions
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17
kernel/power/main.c
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@@ -280,13 +280,7 @@ static ssize_t pm_wakeup_irq_show(struct kobject *kobj,
return pm_wakeup_irq ? sprintf(buf, "%u\n", pm_wakeup_irq) : -ENODATA;
}
static ssize_t pm_wakeup_irq_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t n)
{
return -EINVAL;
}
power_attr(pm_wakeup_irq);
power_attr_ro(pm_wakeup_irq);
#else /* !CONFIG_PM_SLEEP_DEBUG */
static inline void pm_print_times_init(void) {}
@@ -564,14 +558,7 @@ static ssize_t pm_trace_dev_match_show(struct kobject *kobj,
return show_trace_dev_match(buf, PAGE_SIZE);
}
static ssize_t
pm_trace_dev_match_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t n)
{
return -EINVAL;
}
power_attr(pm_trace_dev_match);
power_attr_ro(pm_trace_dev_match);
#endif /* CONFIG_PM_TRACE */