From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chanwoo Choi Subject: Re: [PATCH v2 1/5] devfreq: refactor set_target frequency function Date: Tue, 04 Dec 2018 13:39:45 +0900 Message-ID: <5C060511.8020802@samsung.com> References: <1543847475-7600-1-git-send-email-l.luba@partner.samsung.com> <1543847475-7600-2-git-send-email-l.luba@partner.samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8BIT Return-path: In-reply-to: <1543847475-7600-2-git-send-email-l.luba@partner.samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: Lukasz Luba , linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org Cc: tjakobi@math.uni-bielefeld.de, myungjoo.ham@samsung.com, kyungmin.park@samsung.com, rjw@rjwysocki.net, len.brown@intel.com, pavel@ucw.cz, gregkh@linuxfoundation.org, keescook@chromium.org, anton@enomsg.org, ccross@android.com, tony.luck@intel.com, robh+dt@kernel.org, mark.rutland@arm.com, kgene@kernel.org, krzk@kernel.org, m.szyprowski@samsung.com, b.zolnierkie@samsung.com List-Id: devicetree@vger.kernel.org Hi Lukasz, On 2018년 12월 03일 23:31, Lukasz Luba wrote: > The refactoring is needed for the new client in devfreq: suspend. > To avoid code duplication, move it to the new local function > devfreq_set_target. > > The patch is based on earlier work by Tobias Jakobi. As I already commented, Please remove it. You already mentioned it on cover-letter. If you want to contain the contribution history of Tobias, you might better to add 'Signed-off-by' or others. > > Suggested-by: Tobias Jakobi > Suggested-by: Chanwoo Choi > Signed-off-by: Lukasz Luba > --- > drivers/devfreq/devfreq.c | 62 +++++++++++++++++++++++++++-------------------- > 1 file changed, 36 insertions(+), 26 deletions(-) > > diff --git a/drivers/devfreq/devfreq.c b/drivers/devfreq/devfreq.c > index 1414130..a9fd61b 100644 > --- a/drivers/devfreq/devfreq.c > +++ b/drivers/devfreq/devfreq.c > @@ -285,6 +285,40 @@ static int devfreq_notify_transition(struct devfreq *devfreq, > return 0; > } > > +static int devfreq_set_target(struct devfreq *devfreq, unsigned long new_freq, > + u32 flags) > +{ > + struct devfreq_freqs freqs; > + unsigned long cur_freq; > + int err = 0; > + > + if (devfreq->profile->get_cur_freq) > + devfreq->profile->get_cur_freq(devfreq->dev.parent, &cur_freq); > + else > + cur_freq = devfreq->previous_freq; > + > + freqs.old = cur_freq; > + freqs.new = new_freq; > + devfreq_notify_transition(devfreq, &freqs, DEVFREQ_PRECHANGE); > + > + err = devfreq->profile->target(devfreq->dev.parent, &new_freq, flags); > + if (err) { > + freqs.new = cur_freq; > + devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE); > + return err; > + } > + > + freqs.new = new_freq; > + devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE); > + > + if (devfreq_update_status(devfreq, new_freq)) > + dev_err(&devfreq->dev, > + "Couldn't update frequency transition information.\n"); > + > + devfreq->previous_freq = new_freq; > + return err; > +} > + > /* Load monitoring helper functions for governors use */ > > /** > @@ -296,8 +330,7 @@ static int devfreq_notify_transition(struct devfreq *devfreq, > */ > int update_devfreq(struct devfreq *devfreq) > { > - struct devfreq_freqs freqs; > - unsigned long freq, cur_freq, min_freq, max_freq; > + unsigned long freq, min_freq, max_freq; > int err = 0; > u32 flags = 0; > > @@ -333,31 +366,8 @@ int update_devfreq(struct devfreq *devfreq) > flags |= DEVFREQ_FLAG_LEAST_UPPER_BOUND; /* Use LUB */ > } > > - if (devfreq->profile->get_cur_freq) > - devfreq->profile->get_cur_freq(devfreq->dev.parent, &cur_freq); > - else > - cur_freq = devfreq->previous_freq; > - > - freqs.old = cur_freq; > - freqs.new = freq; > - devfreq_notify_transition(devfreq, &freqs, DEVFREQ_PRECHANGE); > + return devfreq_set_target(devfreq, freq, flags); > > - err = devfreq->profile->target(devfreq->dev.parent, &freq, flags); > - if (err) { > - freqs.new = cur_freq; > - devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE); > - return err; > - } > - > - freqs.new = freq; > - devfreq_notify_transition(devfreq, &freqs, DEVFREQ_POSTCHANGE); > - > - if (devfreq_update_status(devfreq, freq)) > - dev_err(&devfreq->dev, > - "Couldn't update frequency transition information.\n"); > - > - devfreq->previous_freq = freq; > - return err; > } > EXPORT_SYMBOL(update_devfreq); > > -- Best Regards, Chanwoo Choi Samsung Electronics