linux-kernel - Re: [PATCH] media: rcar_fdp1: Fix the correct variable assignments

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Message-ID: <CAMuHMdWD+FXt-rUz6oiU9MNq3EiKExgic17kCnUjynidii470w@mail.gmail.com>
Date:   Thu, 21 Oct 2021 09:59:18 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Tang Bin <tangbin@...s.chinamobile.com>
Cc:     Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Linux Media Mailing List <linux-media@...r.kernel.org>,
        Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] media: rcar_fdp1: Fix the correct variable assignments

Hi Tang,

Thanks for your patch!

On Thu, Oct 21, 2021 at 5:10 AM Tang Bin <tangbin@...s.chinamobile.com> wrote:
> In the function fdp1_probe(), when get irq failed, the
> function platform_get_irq() log an error message, so
> remove redundant message here. And the variable type
> of "ret" is int, the "fdp1->irq" is unsigned int, when
> irq failed, this place maybe wrong, thus fix it.

The second issue is not actually present, as the error check
operates on ret, not fdp1->irq?

> Signed-off-by: Tang Bin <tangbin@...s.chinamobile.com>

> --- a/drivers/media/platform/rcar_fdp1.c
> +++ b/drivers/media/platform/rcar_fdp1.c
> @@ -2289,11 +2289,10 @@ static int fdp1_probe(struct platform_device *pdev)
>                 return PTR_ERR(fdp1->regs);
>
>         /* Interrupt service routine registration */
> -       fdp1->irq = ret = platform_get_irq(pdev, 0);
> -       if (ret < 0) {
> -               dev_err(&pdev->dev, "cannot find IRQ\n");
> +       ret = platform_get_irq(pdev, 0);
> +       if (ret < 0)
>                 return ret;
> -       }
> +       fdp1->irq = ret;
>
>         ret = devm_request_irq(&pdev->dev, fdp1->irq, fdp1_irq_handler, 0,
>                                dev_name(&pdev->dev), fdp1);

Anyway, the code is correct, so:
Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds