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Date:   Fri, 13 Jan 2023 18:10:51 +0530
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Subject: Re: [Patch v1 01/10] memory: tegra: add interconnect support for DRAM
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To:     Dmitry Osipenko <digetx@gmail.com>, <treding@nvidia.com>,
        <krzysztof.kozlowski@linaro.org>, <dmitry.osipenko@collabora.com>,
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CC:     <sanjayc@nvidia.com>, <ksitaraman@nvidia.com>, <ishah@nvidia.com>,
        <bbasu@nvidia.com>, Sumit Gupta <sumitg@nvidia.com>
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From:   Sumit Gupta <sumitg@nvidia.com>
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On 22/12/22 00:50, Dmitry Osipenko wrote:
> External email: Use caution opening links or attachments
> 
> 
> 20.12.2022 19:02, Sumit Gupta пишет:
>> +static int tegra_emc_icc_set_bw(struct icc_node *src, struct icc_node *dst)
>> +{
>> +     struct tegra186_emc *emc = to_tegra186_emc(dst->provider);
>> +     struct tegra_mc *mc = dev_get_drvdata(emc->dev->parent);
>> +     struct mrq_bwmgr_int_request bwmgr_req = { 0 };
>> +     struct mrq_bwmgr_int_response bwmgr_resp = { 0 };
>> +     struct tegra_icc_node *tnode = mc->curr_tnode;
>> +     struct tegra_bpmp_message msg;
>> +     int ret = 0;
>> +
>> +     /*
>> +      * Same Src and Dst node will happen during boot from icc_node_add().
>> +      * This can be used to pre-initialize and set bandwidth for all clients
>> +      * before their drivers are loaded. We are skipping this case as for us,
>> +      * the pre-initialization already happened in Bootloader(MB2) and BPMP-FW.
>> +      */
>> +     if (src->id == dst->id)
>> +             return 0;
>> +
>> +     if (mc->curr_tnode->type == TEGRA_ICC_NISO)
> 
> The mc->curr_tnode usage looks suspicious, why you can't use src node?
> 

Now, we can get rid of "curr_tnode" after moving the code from the EMC 
to MC driver for transferring MC client's request info to the BPMP.