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From: Baruch Siach <baruch@tkos.co.il>
To: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Cc: linux-serial@vger.kernel.org,
	Greg KH <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/9] serial: digicolor-usart: Don't allow CS5-6
Date: Wed, 18 May 2022 07:16:01 +0300	[thread overview]
Message-ID: <87tu9nqxtk.fsf@tarshish> (raw)
In-Reply-To: <20220517110737.37148-3-ilpo.jarvinen@linux.intel.com>

Hi Ilpo,

On Tue, May 17 2022, Ilpo Järvinen wrote:
> Only CS7 and CS8 seem supported but CSIZE is not sanitized to CS8 in
> the default: block.
>
> Set CSIZE correctly so that userspace knows the effective value.
> Incorrect CSIZE also results in miscalculation of the frame bits in
> tty_get_char_size() or in its predecessor where the roughly the same
> code is directly within uart_update_timeout().
>
> Cc: Baruch Siach <baruch@tkos.co.il>
> Fixes: 5930cb3511df (serial: driver for Conexant Digicolor USART)
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Acked-by: Baruch Siach <baruch@tkos.co.il>

Thanks,
baruch

> ---
>  drivers/tty/serial/digicolor-usart.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/tty/serial/digicolor-usart.c b/drivers/tty/serial/digicolor-usart.c
> index 6d70fea76bb3..65e653eb5026 100644
> --- a/drivers/tty/serial/digicolor-usart.c
> +++ b/drivers/tty/serial/digicolor-usart.c
> @@ -309,6 +309,8 @@ static void digicolor_uart_set_termios(struct uart_port *port,
>  	case CS8:
>  	default:
>  		config |= UA_CONFIG_CHAR_LEN;
> +		termios->c_cflag &= ~CSIZE;
> +		termios->c_cflag |= CS8;
>  		break;
>  	}


-- 
                                                     ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch@tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -

WARNING: multiple messages have this Message-ID (diff)
From: Baruch Siach <baruch@tkos.co.il>
To: "Ilpo Järvinen" <ilpo.jarvinen@linux.intel.com>
Cc: linux-serial@vger.kernel.org,
	Greg KH <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/9] serial: digicolor-usart: Don't allow CS5-6
Date: Wed, 18 May 2022 07:16:01 +0300	[thread overview]
Message-ID: <87tu9nqxtk.fsf@tarshish> (raw)
In-Reply-To: <20220517110737.37148-3-ilpo.jarvinen@linux.intel.com>

Hi Ilpo,

On Tue, May 17 2022, Ilpo Järvinen wrote:
> Only CS7 and CS8 seem supported but CSIZE is not sanitized to CS8 in
> the default: block.
>
> Set CSIZE correctly so that userspace knows the effective value.
> Incorrect CSIZE also results in miscalculation of the frame bits in
> tty_get_char_size() or in its predecessor where the roughly the same
> code is directly within uart_update_timeout().
>
> Cc: Baruch Siach <baruch@tkos.co.il>
> Fixes: 5930cb3511df (serial: driver for Conexant Digicolor USART)
> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

Acked-by: Baruch Siach <baruch@tkos.co.il>

Thanks,
baruch

> ---
>  drivers/tty/serial/digicolor-usart.c | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/drivers/tty/serial/digicolor-usart.c b/drivers/tty/serial/digicolor-usart.c
> index 6d70fea76bb3..65e653eb5026 100644
> --- a/drivers/tty/serial/digicolor-usart.c
> +++ b/drivers/tty/serial/digicolor-usart.c
> @@ -309,6 +309,8 @@ static void digicolor_uart_set_termios(struct uart_port *port,
>  	case CS8:
>  	default:
>  		config |= UA_CONFIG_CHAR_LEN;
> +		termios->c_cflag &= ~CSIZE;
> +		termios->c_cflag |= CS8;
>  		break;
>  	}


-- 
                                                     ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch@tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -

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  reply	other threads:[~2022-05-18  4:17 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-17 11:07 [PATCH 0/9] tty/serial: Termios flag fixes Ilpo Järvinen
2022-05-17 11:07 ` Ilpo Järvinen
2022-05-17 11:07 ` [PATCH 1/9] serial: uartline: Fix BRKINT clearing Ilpo Järvinen
2022-05-17 14:33   ` Sean Anderson
2022-05-18 12:18   ` Shubhrajyoti Datta
2022-05-18 12:25     ` Ilpo Järvinen
2022-05-17 11:07 ` [PATCH 2/9] serial: digicolor-usart: Don't allow CS5-6 Ilpo Järvinen
2022-05-17 11:07   ` Ilpo Järvinen
2022-05-18  4:16   ` Baruch Siach [this message]
2022-05-18  4:16     ` Baruch Siach
2022-05-17 11:07 ` [PATCH 3/9] serial: rda-uart: " Ilpo Järvinen
2022-05-17 11:07   ` Ilpo Järvinen
2022-05-17 11:07 ` [PATCH 4/9] serial: txx9: " Ilpo Järvinen
2022-05-17 11:07 ` [PATCH 5/9] serial: sh-sci: " Ilpo Järvinen
2022-05-17 11:07 ` [PATCH 6/9] serial: sifive: Sanitize CSIZE and c_iflag Ilpo Järvinen
2022-05-17 11:07   ` Ilpo Järvinen
2022-05-17 11:07 ` [PATCH 7/9] serial: st-asc: Sanitize CSIZE and correct PARENB for CS7 Ilpo Järvinen
2022-05-17 11:07   ` Ilpo Järvinen
2022-05-17 11:07 ` [PATCH 8/9] serial: stm32-usart: Correct CSIZE, bits, and parity Ilpo Järvinen
2022-05-17 11:07   ` Ilpo Järvinen
2022-05-17 11:07 ` [PATCH 9/9] pcmcia: synclink_cs: Don't allow CS5-6 Ilpo Järvinen

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