linux-kernel - RE: [PATCH v14 2/4] dmaengine: tegra: Add tegra gpcdma driver

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Message-ID: <BN9PR12MB52738F4B5B7494466A9CB5A1C0769@BN9PR12MB5273.namprd12.prod.outlook.com>
Date:   Wed, 15 Dec 2021 13:50:09 +0000
From:   Akhil R <akhilrajeev@...dia.com>
To:     Dmitry Osipenko <digetx@...il.com>,
        "dan.j.williams@...el.com" <dan.j.williams@...el.com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Krishna Yarlagadda <kyarlagadda@...dia.com>,
        Laxman Dewangan <ldewangan@...dia.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
        "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
        Rajesh Gumasta <rgumasta@...dia.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "thierry.reding@...il.com" <thierry.reding@...il.com>,
        "vkoul@...nel.org" <vkoul@...nel.org>
CC:     Pavan Kunapuli <pkunapuli@...dia.com>
Subject: RE: [PATCH v14 2/4] dmaengine: tegra: Add tegra gpcdma driver

> 06.12.2021 16:00, Akhil R пишет:
> > +static const struct __maybe_unused dev_pm_ops tegra_dma_dev_pm_ops =
> {
> > +     SET_LATE_SYSTEM_SLEEP_PM_OPS(tegra_dma_pm_suspend,
> > +tegra_dma_pm_resume) };
> 
> Why late?
To wait for the drivers using the dma to be suspended so that they
don't keep the dma busy.
Agree with the other comments.

Thanks,
Akhil