linux-kernel - Re: [PATCH 11/15] tty: serial: qcom-geni-serial: stop operations in progress at shutdown

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

Message-ID: <208a663b-c2b2-d5a8-9eec-62f9a692c6c7@linaro.org>
Date:   Fri, 18 Nov 2022 14:31:53 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Bartosz Golaszewski <brgl@...ev.pl>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jiri Slaby <jirislaby@...nel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Vinod Koul <vkoul@...nel.org>, Alex Elder <elder@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-serial@...r.kernel.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
Subject: Re: [PATCH 11/15] tty: serial: qcom-geni-serial: stop operations in
 progress at shutdown



On 18/11/2022 13:25, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> 
> We don't stop transmissions in progress at shutdown. This is fine with
> FIFO SE mode but with DMA it causes trouble so fix it now.
> 
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
>   drivers/tty/serial/qcom_geni_serial.c | 3 +++
>   1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/tty/serial/qcom_geni_serial.c b/drivers/tty/serial/qcom_geni_serial.c
> index 6a9f3f937f29..091b8f277a04 100644
> --- a/drivers/tty/serial/qcom_geni_serial.c
> +++ b/drivers/tty/serial/qcom_geni_serial.c
> @@ -868,6 +868,9 @@ static void get_tx_fifo_size(struct qcom_geni_serial_port *port)
>   
>   static void qcom_geni_serial_shutdown(struct uart_port *uport)
>   {
> +	qcom_geni_serial_stop_tx(uport);
> +	qcom_geni_serial_stop_rx(uport);
> +
>   	disable_irq(uport->irq);
>   }
>