提交 a1e9ca69 编写于 作者: R Rafael J. Wysocki

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

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: NSergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
上级 013c074f
......@@ -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 */
......
......@@ -77,6 +77,15 @@ static struct kobj_attribute _name##_attr = { \
.store = _name##_store, \
}
#define power_attr_ro(_name) \
static struct kobj_attribute _name##_attr = { \
.attr = { \
.name = __stringify(_name), \
.mode = S_IRUGO, \
}, \
.show = _name##_show, \
}
/* Preferred image size in bytes (default 500 MB) */
extern unsigned long image_size;
/* Size of memory reserved for drivers (default SPARE_PAGES x PAGE_SIZE) */
......
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