linux-kernel - Re: [PATCH v3 3/5] spi: sunxi: Add Allwinner A31 SPI controller driver

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Date:	Fri, 31 Jan 2014 12:48:09 +0000
From:	Mark Brown <broonie@...nel.org>
To:	Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc:	Mike Turquette <mturquette@...aro.org>,
	Emilio Lopez <emilio@...pez.com.ar>,
	linux-sunxi@...glegroups.com, linux-spi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, kevin.z.m.zh@...il.com,
	sunny@...winnertech.com, shuge@...winnertech.com,
	zhuzhenhua@...winnertech.com
Subject: Re: [PATCH v3 3/5] spi: sunxi: Add Allwinner A31 SPI controller
 driver

On Fri, Jan 31, 2014 at 11:55:50AM +0100, Maxime Ripard wrote:

> +	master = devm_spi_alloc_master(&pdev->dev, sizeof(struct sun6i_spi));
> +	if (!master) {
> +		dev_err(&pdev->dev, "Unable to allocate SPI Master\n");
> +		return -ENOMEM;
> +	}

This now depends on your other series which as I said doesn't look like
the best approach.

> +	pm_runtime_enable(&pdev->dev);
> +	if (!pm_runtime_enabled(&pdev->dev)) {
> +		ret = sun6i_spi_runtime_resume(&pdev->dev);
> +		if (ret) {
> +			dev_err(&pdev->dev, "Couldn't resume the device\n");
> +			return ret;
> +		}
> +	}

No, as discussed don't do this - notice how other drivers aren't written
this way either.  Like I said leave the device powered on startup and
then let it be idled by runtime PM.

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