linux-kernel - Re: [PATCH 2/2] irqchip: add driver for imx-irqsteer controller

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Date:   Tue, 16 Oct 2018 13:48:59 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Lucas Stach <l.stach@...gutronix.de>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Sascha Hauer <kernel@...gutronix.de>,
        patchwork-lst@...gutronix.de
Subject: Re: [PATCH 2/2] irqchip: add driver for imx-irqsteer controller

Hi Lucas,

On Tue, Oct 16, 2018 at 1:43 PM Lucas Stach <l.stach@...gutronix.de> wrote:

> --- /dev/null
> +++ b/drivers/irqchip/irq-imx-irqsteer.c
> @@ -0,0 +1,281 @@
> +// SPDX-License-Identifier: GPL-2.0-or-later

According to Documentation/process/license-rules.rst this should be:
// SPDX-License-Identifier: GPL-2.0+

> +       ret = clk_prepare_enable(data->ipg_clk);
> +       if (ret) {
> +               dev_err(&pdev->dev, "failed to enable ipg clk: %d\n", ret);
> +               return ret;
> +       }
> +
> +       /* enable channel 1 by default */
> +       writel_relaxed(1, data->regs + CHANCTRL);
> +
> +       data->domain = irq_domain_add_linear(np, data->channum * 32,
> +                                            &imx_irqsteer_domain_ops, data);
> +       if (!data->domain) {
> +               dev_err(&data->pdev->dev, "failed to create IRQ domain\n");

You should call clk_disable_unprepare(irqsteer_data->ipg_clk); prior
to returning.

> +               return -ENOMEM;