linux-kernel - Re: [PATCH] [sh/highlander] psw: Add error handling in psw_irq

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Message-ID: <CAMuHMdUjo_tUu6G6q3ww_UeJxzwtDBieMwFARTAJf4Emhej-YA@mail.gmail.com>
Date:   Fri, 1 Dec 2023 10:48:02 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Haoran Liu <liuhaoran14@....com>
Cc:     ysato@...rs.sourceforge.jp, dalias@...c.org,
        glaubitz@...sik.fu-berlin.de, linux-sh@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [sh/highlander] psw: Add error handling in psw_irq_handler

Hi Haoran,

On Wed, Nov 29, 2023 at 7:38 AM Haoran Liu <liuhaoran14@....com> wrote:
> This patch adds error handling for the platform_get_drvdata call
> within the psw_irq_handler function in
> arch/sh/boards/mach-highlander/psw.c. Previously, the absence of
> error checking could lead to unexpected behavior if
> platform_get_drvdata returned a null pointer.

Can you please tell me how you detected this issue?
Thanks!

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