linux-kernel - Re: [PATCH v2 01/11] ASoC: tegra20-spdif: stop setting slave

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Message-ID: <e455d008-9389-b15b-b2d1-b2193cbd77c7@gmail.com>
Date:   Wed, 24 Nov 2021 20:36:55 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Vinod Koul <vkoul@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        Andy Gross <agross@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Hyun Kwon <hyun.kwon@...inx.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Jon Hunter <jonathanh@...dia.com>,
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        Michal Simek <michal.simek@...inx.com>,
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Subject: Re: [PATCH v2 01/11] ASoC: tegra20-spdif: stop setting slave_id

24.11.2021 19:47, Arnd Bergmann пишет:
> On Wed, Nov 24, 2021 at 5:32 PM Dmitry Osipenko <digetx@...il.com> wrote:
>> 23.11.2021 01:21, Arnd Bergmann пишет:
>>
>> The commit message is correct, however you could remove even more code
>> here. But there is no need to make a v3 just because this patch because
>> I already prepared patchset that revives this S/PDIF driver and enables
>> HDMI audio on Tegra20. I'll take care of cleaning up the whole code of
>> this driver.
> 
> Ok, perfect, thanks for taking a closer look as well.
> 
>>
>> -       dmareq = platform_get_resource(pdev, IORESOURCE_DMA, 0);
>> -       if (!dmareq) {
>> -               dev_err(&pdev->dev, "No DMA resource\n");
>> -               return -ENODEV;
>> -       }
>> -
> 
> Right, I think I considered doing this at some point as well, not sure
> why I left it in for the version I posted. Passing the IORESOURCE_DMA
> values is clearly wrong by itself and needs to be removed, though
> it's not obvious what the correct way of requesting the DMA channel
> is for this driver either, without a DT binding or users.

Yes, it's indeed not obvious.