}
EXPORT_SYMBOL(rfkill_resume_polling);
-#ifdef CONFIG_PM_SLEEP
+#ifdef CONFIG_RFKILL_PM
static int rfkill_suspend(struct device *dev)
{
struct rfkill *rfkill = to_rfkill(dev);
.dev_release = rfkill_release,
.dev_groups = rfkill_dev_groups,
.dev_uevent = rfkill_dev_uevent,
+#ifdef CONFIG_RFKILL_PM
.pm = RFKILL_PM_OPS,
+#endif
};
bool rfkill_blocked(struct rfkill *rfkill)
return res;
}
-static bool rfkill_readable(struct rfkill_data *data)
-{
- bool r;
-
- mutex_lock(&data->mtx);
- r = !list_empty(&data->events);
- mutex_unlock(&data->mtx);
-
- return r;
-}
-
static ssize_t rfkill_fop_read(struct file *file, char __user *buf,
size_t count, loff_t *pos)
{
goto out;
}
mutex_unlock(&data->mtx);
+ /* since we re-check and it just compares pointers,
+ * using !list_empty() without locking isn't a problem
+ */
ret = wait_event_interruptible(data->read_wait,
- rfkill_readable(data));
+ !list_empty(&data->events));
mutex_lock(&data->mtx);
if (ret)