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Subject: Re: [PATCH v6 12/16] dmaengine: tegra-apb: Clean up suspend-resume
To:     Jon Hunter <jonathanh@nvidia.com>,
        Laxman Dewangan <ldewangan@nvidia.com>,
        Vinod Koul <vkoul@kernel.org>,
        Dan Williams <dan.j.williams@intel.com>,
        Thierry Reding <thierry.reding@gmail.com>,
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Cc:     dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org,
        linux-kernel@vger.kernel.org
References: <20200130043804.32243-1-digetx@gmail.com>
 <20200130043804.32243-13-digetx@gmail.com>
 <3507dcb9-4a92-8145-1953-e40960604661@nvidia.com>
From:   Dmitry Osipenko <digetx@gmail.com>
Message-ID: <fb32d2e2-4cd3-c493-7792-3da62276cc07@gmail.com>
Date:   Thu, 30 Jan 2020 23:06:14 +0300
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30.01.2020 22:00, Jon Hunter пишет:
> 
> On 30/01/2020 04:38, Dmitry Osipenko wrote:
>> It is enough to check whether hardware is busy on suspend and to reset
>> it across of suspend-resume because channel's configuration is fully
>> re-programmed on each DMA transaction anyways and because save-restore
>> of an active channel won't end up well without pausing transfer prior to
>> saving of the state (note that all channels shall be idling at the time of
>> suspend, so save-restore is not needed at all).
> 
> Maybe just update the commit message to state that the pause callback is
> not implemented and channel pause is not supported prior to T114. And
> then ...
> 
> Acked-by: Jon Hunter <jonathanh@nvidia.com>

Thanks, I'll update the message.