linux-kernel - Re: [PATCH v6 10/15] serial: stm32-usart: Add STM32 USART Driver

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Date:	Tue, 07 Apr 2015 13:05:39 -0400
From:	Peter Hurley <peter@...leysoftware.com>
To:	Andreas Färber <afaerber@...e.de>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	u.kleine-koenig@...gutronix.de, geert@...ux-m68k.org,
	Rob Herring <robh+dt@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Arnd Bergmann <arnd@...db.de>, stefan@...er.ch,
	pmeerw@...erw.net, pebolle@...cali.nl, andy.shevchenko@...il.com,
	cw00.choi@...sung.com, Russell King <linux@....linux.org.uk>,
	Daniel Lezcano <daniel.lezcano@...aro.org>, joe@...ches.com
CC:	Jonathan Corbet <corbet@....net>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Antti Palosaari <crope@....fi>, Tejun Heo <tj@...nel.org>,
	Will Deacon <will.deacon@....com>,
	Nikolay Borisov <Nikolay.Borisov@....com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Kees Cook <keescook@...omium.org>,
	Michal Marek <mmarek@...e.cz>, linux-doc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-serial@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-api@...r.kernel.org
Subject: Re: [PATCH v6 10/15] serial: stm32-usart: Add STM32 USART Driver

Hi Andreas,

On 04/07/2015 12:51 PM, Andreas Färber wrote:
> Am 07.04.2015 um 18:30 schrieb Maxime Coquelin:
>> This drivers adds support to the STM32 USART controller, which is a
>> standard serial driver.
>>
>> Tested-by: Chanwoo Choi <cw00.choi@...sung.com>
>> Reviewed-by: Peter Hurley <peter@...leysoftware.com>
>> Signed-off-by: Maxime Coquelin <mcoquelin.stm32@...il.com>
>> ---
>>  drivers/tty/serial/Kconfig       |  17 +
>>  drivers/tty/serial/Makefile      |   1 +
>>  drivers/tty/serial/stm32-usart.c | 735 +++++++++++++++++++++++++++++++++++++++
>>  include/uapi/linux/serial_core.h |   3 +
>>  4 files changed, 756 insertions(+)
>>  create mode 100644 drivers/tty/serial/stm32-usart.c
> [...]
>> diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
>> new file mode 100644
>> index 0000000..4adc430
>> --- /dev/null
>> +++ b/drivers/tty/serial/stm32-usart.c
> [...]
>> +#define DRIVER_NAME "stm32-usart"
>> +#define STM32_SERIAL_NAME "ttyS"
> 
> I'm surprised no one has complained about ttyS yet. Doesn't that need to
> be unique, such as ttySTM (efm32 uses ttyefm), to avoid clashes between
> serial drivers? ttyS was exclusive to the 8250 driver, I thought.

As long as this platform doesn't support 8250 h/w, I don't care; and
by the time this platform is ready for multiconfig, I'll have ttyS
coexistence fixed.

Regards,
Peter Hurley
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