linux-kernel - Re: [PATCH v7 4/6] mtd: rawnand: add NVIDIA Tegra NAND Flash controller driver

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Date:   Sun, 24 Jun 2018 21:50:14 +0200
From:   Boris Brezillon <boris.brezillon@...tlin.com>
To:     Stefan Agner <stefan@...er.ch>
Cc:     dwmw2@...radead.org, computersforpeace@...il.com,
        marek.vasut@...il.com, robh+dt@...nel.org, mark.rutland@....com,
        thierry.reding@...il.com, benjamin.lindqvist@...ian.se,
        pgaikwad@...dia.com, dev@...xeye.de, mirza.krak@...il.com,
        richard@....at, pdeschrijver@...dia.com,
        linux-kernel@...r.kernel.org, krzk@...nel.org,
        jonathanh@...dia.com, devicetree@...r.kernel.org,
        linux-mtd@...ts.infradead.org, marcel@...wiler.com,
        miquel.raynal@...tlin.com, linux-tegra@...r.kernel.org,
        digetx@...il.com, gaireg@...reg.de
Subject: Re: [PATCH v7 4/6] mtd: rawnand: add NVIDIA Tegra NAND Flash
 controller driver

On Sun, 24 Jun 2018 21:22:28 +0200
Stefan Agner <stefan@...er.ch> wrote:

> +
> +static int tegra_nand_remove(struct platform_device *pdev)
> +{
> +	struct tegra_nand_controller *ctrl = platform_get_drvdata(pdev);
> +
> +	nand_release(nand_to_mtd(ctrl->chip));

I still see nand_release() being used here. As I said in my review of
v6, it's not safe. Please use mtd_device_unregister() + nand_cleanup()
instead, and check the return code of mtd_device_unregister().

With this addressed

Reviewed-by: Boris Brezillon <boris.brezillon@...tlin.com>

> +
> +	clk_disable_unprepare(ctrl->clk);
> +
> +	return 0;
> +}
> +