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| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-01-02 03:09:16 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-01-04 22:28:59 +0100 |
| commit | a1e9ca6967d68209c70e616a224efa89a6b86ca6 (patch) | |
| tree | 5de17c38e1f91798105a401d8cbfe84e63f6eeae /kernel | |
| parent | 013c074f8642d8e815ad670601f8e27155a74b57 (diff) | |
| download | linux-a1e9ca6967d68209c70e616a224efa89a6b86ca6.tar.gz linux-a1e9ca6967d68209c70e616a224efa89a6b86ca6.tar.bz2 linux-a1e9ca6967d68209c70e616a224efa89a6b86ca6.zip | |
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: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/power/main.c | 17 | ||||
| -rw-r--r-- | kernel/power/power.h | 9 |
2 files changed, 11 insertions, 15 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c index b2dd4d999900..27946975eff0 100644 --- a/kernel/power/main.c +++ b/kernel/power/main.c @@ -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 */ diff --git a/kernel/power/power.h b/kernel/power/power.h index caadb566e82b..efe1b3b17c88 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -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) */ |