linux-kernel - Re: [PATCH v5 21/39] ata: pata_ep93xx: add device tree support

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Message-ID: <ZV3zP65l91aq6hNw@smile.fi.intel.com>
Date:   Wed, 22 Nov 2023 14:25:35 +0200
From:   Andy Shevchenko <andriy.shevchenko@...el.com>
To:     Nikita Shubin <nikita.shubin@...uefel.me>
Cc:     Sergey Shtylyov <s.shtylyov@....ru>,
        Damien Le Moal <dlemoal@...nel.org>,
        linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
        Alexander Sverdlin <alexander.sverdlin@...il.com>
Subject: Re: [PATCH v5 21/39] ata: pata_ep93xx: add device tree support

On Wed, Nov 22, 2023 at 11:59:59AM +0300, Nikita Shubin wrote:
> - add OF ID match table
> - drop platform DMA and filters
> - change DMA setup to OF, so we can defer probe

...

> +	drv_data->dma_rx_channel = dma_request_chan(dev, "rx");
> +	if (IS_ERR(drv_data->dma_rx_channel)) {
> +		ret = PTR_ERR(drv_data->dma_rx_channel);
> +		return dev_err_probe(dev, ret, "rx DMA setup failed");
> +	}

PTR_ERR_OR_ZERO() as suggested in another patch?

...

> +	drv_data->dma_tx_channel = dma_request_chan(&pdev->dev, "tx");
> +	if (IS_ERR(drv_data->dma_tx_channel)) {
> +		ret = PTR_ERR(drv_data->dma_tx_channel);
> +		dev_err_probe(dev, ret, "tx DMA setup failed");
> +		goto fail_release_rx;
>  	}

Ditto.

-- 
With Best Regards,
Andy Shevchenko