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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-01-02 03:09:16 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2016-01-04 22:28:59 +0100
commita1e9ca6967d68209c70e616a224efa89a6b86ca6 (patch)
tree5de17c38e1f91798105a401d8cbfe84e63f6eeae /kernel/power/main.c
parentPM / sleep: prohibit devices probing during suspend/hibernation (diff)
downloadlinux-a1e9ca6967d68209c70e616a224efa89a6b86ca6.tar.xz
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/power/main.c')
-rw-r--r--kernel/power/main.c17
1 files changed, 2 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 */