linux-kernel - Re: [PATCH v3 2/4] input: misc: pm8941-pwrkey: add support for PON GEN3 base addresses

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Date:   Thu, 3 Feb 2022 21:16:56 +0000
From:   Stephen Boyd <swboyd@...omium.org>
To:     Anjelique Melendez <quic_amelende@...cinc.com>,
        dmitry.torokhov@...il.com
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, collinsd@...eaurora.org,
        bjorn.andersson@...aro.org, skakit@...eaurora.org
Subject: Re: [PATCH v3 2/4] input: misc: pm8941-pwrkey: add support for PON
 GEN3 base addresses

Quoting Anjelique Melendez (2022-02-02 17:08:05)
> diff --git a/drivers/input/misc/pm8941-pwrkey.c b/drivers/input/misc/pm8941-pwrkey.c
> index e0240db12d4f..2a42a676b021 100644
> --- a/drivers/input/misc/pm8941-pwrkey.c
> +++ b/drivers/input/misc/pm8941-pwrkey.c
> @@ -200,15 +207,21 @@ static int pm8941_pwrkey_probe(struct platform_device *pdev)
>                         dev_err(&pdev->dev, "failed to locate regmap\n");
>                         return -ENODEV;
>                 }
> +       }
>
> -               error = of_property_read_u32(parent->of_node,
> -                                            "reg", &pwrkey->baseaddr);
> -       } else {
> -               error = of_property_read_u32(pdev->dev.of_node, "reg",
> -                                            &pwrkey->baseaddr);
> +       addr = of_get_address(regmap_node, 0, NULL, NULL);
> +       if (!addr) {
> +               dev_err(&pdev->dev, "reg property missing\n");
> +               return -EINVAL;
> +       }
> +       pwrkey->baseaddr = be32_to_cpup(*addr);
> +
> +       if (pwrkey->data->has_pon_pbs) {
> +               /* PON_PBS base address is optional */
> +               addr = of_get_address(regmap_node, 1, NULL, NULL);
> +               if (addr)
> +                       pwrkey->pon_pbs_baseaddr = be32_to_cpup(*addr);

With the deref dropped.

Reviewed-by: Stephen Boyd <swboyd@...omium.org>