linux-kernel - Re: [PATCH 2/2] tty: serial: qcom_geni_serial: Don't try to manually disable the console

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <7663863d-3f38-2ad9-d544-370064695aef@codeaurora.org>
Date:   Tue, 17 Mar 2020 18:37:22 +0530
From:   Akash Asthana <akashast@...eaurora.org>
To:     Douglas Anderson <dianders@...omium.org>,
        gregkh@...uxfoundation.org
Cc:     mka@...omium.org, swboyd@...omium.org, ryandcase@...omium.org,
        bjorn.andersson@...aro.org, skakit@...eaurora.org,
        rojay@...eaurora.org, mgautam@...eaurora.org,
        Andy Gross <agross@...nel.org>,
        Doug Anderson <dianders@...gle.com>,
        Girish Mahadevan <girishm@...eaurora.org>,
        Jiri Slaby <jslaby@...e.com>,
        Karthikeyan Ramasubramanian <kramasub@...eaurora.org>,
        Sagar Dharia <sdharia@...eaurora.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org
Subject: Re: [PATCH 2/2] tty: serial: qcom_geni_serial: Don't try to manually
 disable the console


On 3/14/2020 2:16 AM, Douglas Anderson wrote:
> The geni serial driver's shutdown code had a special case to call
> console_stop().  Grepping through the code, it was the only serial
> driver doing something like this (the only other caller of
> console_stop() was in serial_core.c).
>
> As far as I can tell there's no reason to call console_stop() in the
> geni code.  ...and a good reason _not_ to call it.  Specifically if
> you have an agetty running on the same serial port as the console then
> killing the agetty kills your console and if you start the agetty
> again the console doesn't come back.
>
> Fixes: c4f528795d1a ("tty: serial: msm_geni_serial: Add serial driver support for GENI based QUP")
> Signed-off-by: Douglas Anderson <dianders@...omium.org>
> ---
Reviewed-by: Akash Asthana <akashast@...eaurora.org>

-- 
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,\na Linux Foundation Collaborative Project