On 21. 3. 9. 오후 9:58, Dong Aisheng wrote:
It's unnecessary to set the same freq again and run notifier calls.

Signed-off-by: Dong Aisheng <aisheng.d...@nxp.com>
---
  drivers/devfreq/devfreq.c | 5 ++++-
  1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c
index bf3047896e41..6e80bf70e7b3 100644
--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -358,6 +358,9 @@ static int devfreq_set_target(struct devfreq *devfreq, 
unsigned long new_freq,
        else
                cur_freq = devfreq->previous_freq;
+ if (new_freq == cur_freq)
+               return 0;
+
        freqs.old = cur_freq;
        freqs.new = new_freq;
        devfreq_notify_transition(devfreq, &freqs, DEVFREQ_PRECHANGE);
@@ -374,7 +377,7 @@ static int devfreq_set_target(struct devfreq *devfreq, 
unsigned long new_freq,
         * and DEVFREQ_POSTCHANGE because for showing the correct frequency
         * change order of between devfreq device and passive devfreq device.
         */
-       if (trace_devfreq_frequency_enabled() && new_freq != cur_freq)
+       if (trace_devfreq_frequency_enabled())
                trace_devfreq_frequency(devfreq, new_freq, cur_freq);
freqs.new = new_freq;


I'd like you to squash patch4 with patch6 because actually patch6
is too minor clean-up. I think it is possible.

--
Best Regards,
Samsung Electronics
Chanwoo Choi

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