linux-kernel - Re: [PATCH v6 28/52] memory: tegra: Add and use devm_tegra_get_memory

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Message-ID: <a9effe32-3272-7df9-08e5-da293b1854a9@gmail.com>
Date:   Tue, 27 Oct 2020 22:24:14 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Krzysztof Kozlowski <krzk@...nel.org>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Georgi Djakov <georgi.djakov@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Mikko Perttunen <cyndis@...si.fi>,
        Viresh Kumar <vireshk@...nel.org>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        linux-tegra@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v6 28/52] memory: tegra: Add and use
 devm_tegra_get_memory_controller()

27.10.2020 12:42, Krzysztof Kozlowski пишет:
> On Mon, Oct 26, 2020 at 01:17:11AM +0300, Dmitry Osipenko wrote:
>> Multiple Tegra drivers need to retrieve Memory Controller and there is
>> duplication of the retrieval code among the drivers. This patch removes
>> the duplication and fixes put_device() which was missed in the duplicated
>> code.
>>
>> EMC drivers now use new common devm_tegra_get_memory_controller() helper
>> instead of opencoding the MC retrieval.
>>
>> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
>> ---
>>  drivers/memory/tegra/mc.c                | 48 ++++++++++++++++++++++++
>>  drivers/memory/tegra/tegra124-emc.c      | 18 ++-------
>>  drivers/memory/tegra/tegra210-emc-core.c | 39 +++++--------------
>>  drivers/memory/tegra/tegra30-emc.c       | 18 ++-------
>>  include/soc/tegra/mc.h                   | 10 +++++
>>  5 files changed, 74 insertions(+), 59 deletions(-)
>>
>> diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c
>> index ec8403557ed4..12ea2c79205a 100644
>> --- a/drivers/memory/tegra/mc.c
>> +++ b/drivers/memory/tegra/mc.c
>> @@ -42,6 +42,54 @@ static const struct of_device_id tegra_mc_of_match[] = {
>>  };
>>  MODULE_DEVICE_TABLE(of, tegra_mc_of_match);
>>  
>> +static void tegra_mc_devm_action_put_device(void *data)
>> +{
>> +	struct tegra_mc *mc = data;
>> +
>> +	put_device(mc->dev);
>> +}
>> +
>> +/**
>> + * devm_tegra_get_memory_controller() - get Tegra Memory Controller handle
>> + * @dev: device pointer for the consumer device
>> + *
>> + * This function will search for the Memory Controller node in a device-tree
>> + * and retrieve the Memory Controller handle.
>> + *
>> + * Return: ERR_PTR() on error or a valid pointer to a struct tegra_mc.
>> + */
>> +struct tegra_mc *devm_tegra_get_memory_controller(struct device *dev)
> 
> Usually 'get' is a suffix (for example in clk, gpiod, iio, led), so:
> devm_tegra_memory_controller_get()

Alright, I'll rename it in v7.