Re: [PATCH v2 1/5] devfreq: refactor set_target frequency function
From: Chanwoo Choi <cw00.choi@samsung.com>
Date: 2018-12-04 05:43:22
Also in:
linux-devicetree, linux-pm, linux-samsung-soc, lkml
Hi, On 2018년 12월 04일 13:39, Chanwoo Choi wrote:
Hi Lukasz, On 2018년 12월 03일 23:31, Lukasz Luba wrote:quoted
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.
If you will fix it, feel free to add my tag: Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
quoted
Suggested-by: Tobias Jakobi <redacted> Suggested-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Lukasz Luba <redacted> --- 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel