linux-kernel - Re: [PATCH v6 6/8] interconnect: qcom: Add msm8916 interconnect provider driver

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Message-ID: <3f8fa550-f789-ac04-9d9a-186d596c98f7@linaro.org>
Date:   Fri, 20 Jul 2018 17:55:44 +0300
From:   Georgi Djakov <georgi.djakov@...aro.org>
To:     Alexandre Bailon <abailon@...libre.com>
Cc:     linux-pm@...r.kernel.org, gregkh@...uxfoundation.org,
        rjw@...ysocki.net, robh+dt@...nel.org, mturquette@...libre.com,
        khilman@...libre.com, vincent.guittot@...aro.org,
        skannan@...eaurora.org, bjorn.andersson@...aro.org,
        amit.kucheria@...aro.org, seansw@....qualcomm.com,
        daidavid1@...eaurora.org, evgreen@...omium.org, mka@...omium.org,
        mark.rutland@....com, lorenzo.pieralisi@....com,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v6 6/8] interconnect: qcom: Add msm8916 interconnect
 provider driver

Hi Alexandre,

On 07/11/2018 06:42 PM, Alexandre Bailon wrote:
> On 07/09/2018 05:51 PM, Georgi Djakov wrote:
>> Add driver for the Qualcomm interconnect buses found in msm8916 based
>> platforms.
>>
>> Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
>> ---
>>  drivers/interconnect/Kconfig        |   5 +
>>  drivers/interconnect/Makefile       |   1 +
>>  drivers/interconnect/qcom/Kconfig   |  10 +
>>  drivers/interconnect/qcom/Makefile  |   2 +
>>  drivers/interconnect/qcom/msm8916.c | 499 ++++++++++++++++++++++++++++
>>  5 files changed, 517 insertions(+)
>>  create mode 100644 drivers/interconnect/qcom/msm8916>>

[..]

>> +static int qcom_icc_set(struct icc_node *src, struct icc_node *dst,
>> +			u32 avg, u32 peak)
>> +{
>> +	struct qcom_icc_provider *qp;
>> +	struct qcom_icc_node *qn;
>> +	struct icc_node *node;
>> +	struct icc_provider *provider;
>> +	u64 avg_bw = icc_units_to_bps(avg);
>> +	u64 peak_bw = icc_units_to_bps(peak);
>> +	u64 rate = 0;
>> +	int ret = 0;
>> +
>> +	if (!src)
> NIT: I think that src can't be NULL (there is a if statement to avoid it
> in apply_constraints()).

Yes, true!

Thanks,
Georgi