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Commit 34bd3220 authored by MyungJoo Ham's avatar MyungJoo Ham
Browse files

PM / devfreq: Do not show statistics if it's not ready. 



Before this patch for a device without statistics support,

$ cat trans_stat
    From  :   To
          :   time(ms)
Total transitions : 0
$

After this patch applied for such a device,

$ cat trans_stat
Not Supported.
$

Signed-off-by: default avatarMyungJoo Ham <myungjoo.ham@samsung.com>
parent d7df1e46

drivers/devfreq/devfreq.c

+2 −0
Original line number Diff line number Diff line
@@ -1049,6 +1049,8 @@ static ssize_t trans_stat_show(struct device *dev, 
	if (!devfreq->stop_polling &&

			devfreq_update_status(devfreq, devfreq->previous_freq))

		return 0;

	if (max_state == 0)

		return sprintf(buf, "Not Supported.\n");



	len = sprintf(buf, "     From  :   To\n");

	len += sprintf(buf + len, "           :");