linux-kernel - Re: [PATCH] serial: sh-sci: fix break handling for sysrq

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Message-ID: <CAMuHMdVw-mZKcPuZ9ZtqMPqCTp9bcjHm0Yy8Zb9KtfoM5me_Cg@mail.gmail.com>
Date:   Mon, 23 Aug 2021 11:16:57 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Ulrich Hecht <uli+renesas@...nd.eu>
Cc:     Linux-Renesas <linux-renesas-soc@...r.kernel.org>,
        "open list:SERIAL DRIVERS" <linux-serial@...r.kernel.org>,
        Wolfram Sang <wsa@...nel.org>,
        Yoshihiro Shimoda <yoshihiro.shimoda.uh@...esas.com>,
        Greg KH <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] serial: sh-sci: fix break handling for sysrq

On Mon, Aug 16, 2021 at 6:22 PM Ulrich Hecht <uli+renesas@...nd.eu> wrote:
> This fixes two issues that cause the sysrq sequence to be inadvertently
> aborted on SCIF serial consoles:
>
> - a NUL character remains in the RX queue after a break has been detected,
>   which is then passed on to uart_handle_sysrq_char()
> - the break interrupt is handled twice on controllers with multiplexed ERI
>   and BRI interrupts
>
> Signed-off-by: Ulrich Hecht <uli+renesas@...nd.eu>

FTR:
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