From mboxrd@z Thu Jan 1 00:00:00 1970 From: Krzysztof Kozlowski Subject: Re: [RFC PATCH 01/11] devfreq: exynos-bus: Extract exynos_bus_profile_init() Date: Wed, 24 Jul 2019 21:07:41 +0200 Message-ID: <20190724190741.GD14346@kozik-lap> References: <20190723122016.30279-1-a.swigon@partner.samsung.com> <20190723122016.30279-2-a.swigon@partner.samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Return-path: Content-Disposition: inline In-Reply-To: <20190723122016.30279-2-a.swigon@partner.samsung.com> Sender: linux-kernel-owner@vger.kernel.org To: Artur =?utf-8?B?xZp3aWdvxYQ=?= Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, dri-devel@lists.freedesktop.org, cw00.choi@samsung.com, myungjoo.ham@samsung.com, inki.dae@samsung.com, sw0312.kim@samsung.com, georgi.djakov@linaro.org, m.szyprowski@samsung.com List-Id: devicetree@vger.kernel.org On Tue, Jul 23, 2019 at 02:20:06PM +0200, Artur Świgoń wrote: > This patch adds a new static function, exynos_bus_profile_init(), extracted > from exynos_bus_probe(). > > Signed-off-by: Artur Świgoń > --- > drivers/devfreq/exynos-bus.c | 106 ++++++++++++++++++++--------------- > 1 file changed, 60 insertions(+), 46 deletions(-) > > diff --git a/drivers/devfreq/exynos-bus.c b/drivers/devfreq/exynos-bus.c > index d9f377912c10..d8f1efaf2d49 100644 > --- a/drivers/devfreq/exynos-bus.c > +++ b/drivers/devfreq/exynos-bus.c > @@ -372,12 +372,69 @@ static int exynos_bus_parse_of(struct device_node *np, > return ret; > } > > +static int exynos_bus_profile_init(struct exynos_bus *bus, > + struct devfreq_dev_profile *profile) > +{ > + struct device *dev = bus->dev; > + struct devfreq_simple_ondemand_data *ondemand_data; > + int ret; > + > + /* Initialize the struct profile and governor data for parent device */ > + profile->polling_ms = 50; > + profile->target = exynos_bus_target; > + profile->get_dev_status = exynos_bus_get_dev_status; > + profile->exit = exynos_bus_exit; > + > + ondemand_data = devm_kzalloc(dev, sizeof(*ondemand_data), GFP_KERNEL); > + if (!ondemand_data) { > + ret = -ENOMEM; > + goto err; Just return proper error code. Less lines, obvious code since you do not have any cleanup in error path. > + } > + ondemand_data->upthreshold = 40; > + ondemand_data->downdifferential = 5; > + > + /* Add devfreq device to monitor and handle the exynos bus */ > + bus->devfreq = devm_devfreq_add_device(dev, profile, > + DEVFREQ_GOV_SIMPLE_ONDEMAND, > + ondemand_data); > + if (IS_ERR(bus->devfreq)) { > + dev_err(dev, "failed to add devfreq device\n"); > + ret = PTR_ERR(bus->devfreq); > + goto err; > + } > + > + /* Register opp_notifier to catch the change of OPP */ > + ret = devm_devfreq_register_opp_notifier(dev, bus->devfreq); > + if (ret < 0) { > + dev_err(dev, "failed to register opp notifier\n"); > + goto err; The same - return err. Best regards, Krzysztof