From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Russell King - ARM Linux <linux@arm.linux.org.uk>
Cc: Linus Walleij <linus.walleij@linaro.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Alan Cox <alan@linux.intel.com>,
Linus Walleij <linus.walleij@stericsson.com>,
linux-serial@vger.kernel.org,
Guillaume Jaunet <guillaume.jaunet@stericsson.com>,
Par-Gunnar Hjalmdahl <par-gunnar.hjalmdahl@stericsson.com>,
Anmar Oueja <anmar.oueja@linaro.org>,
Matthias Locher <matthias.locher@stericsson.com>,
"Rajanikanth H.V" <rajanikanth.hv@stericsson.com>,
Christophe Arnal <christophe.arnal@stericsson.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/3] serial: pl011: allow very high baudrates
Date: Fri, 21 Sep 2012 21:55:55 +0100 [thread overview]
Message-ID: <20120921215555.4bca1a48@pyramind.ukuu.org.uk> (raw)
In-Reply-To: <20120921203440.GA6796@n2100.arm.linux.org.uk>
On Fri, 21 Sep 2012 21:34:40 +0100
Russell King - ARM Linux <linux@arm.linux.org.uk> wrote:
> On Fri, Sep 21, 2012 at 08:56:03PM +0100, Alan Cox wrote:
> > If you are calling TCSETS2 passing BOTHER and an actual specific speed
> > you should always be getting handed back the speed requested as it'll see
> > the BOTHER flag is present and assume the caller is smart.
>
> Is this something that should be handled by glibc? If so, ARM for
> whatever reason still seems to use the standard TCGETS and TCSETS
> calls... at least stracing stty in ubuntu precise suggests that's
> the case.
The design was agreed with the glibc people years ago. The glibc folks
then repeatedly ignored it and refused to add it. So I gave up on them.
If you are doing low level tty speed stuff, use ioctl directly.
Now that glibc has had a management change and a clue implant maybe it
can be fixed. Feel free to go kicking deal whales down beaches if you
care.
Alan
next prev parent reply other threads:[~2012-09-21 20:51 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-20 9:46 [PATCH 3/3] serial: pl011: allow very high baudrates Linus Walleij
2012-09-20 19:00 ` Russell King - ARM Linux
2012-09-21 13:41 ` Linus Walleij
2012-09-21 14:37 ` Alan Cox
2012-09-21 14:58 ` Russell King - ARM Linux
2012-09-21 15:05 ` Alan Cox
2012-09-21 15:06 ` Russell King - ARM Linux
2012-09-21 15:36 ` Alan Cox
2012-09-21 15:14 ` Alan Cox
2012-09-21 15:25 ` Alan Cox
2012-09-21 17:52 ` Linus Walleij
2012-09-21 19:56 ` Alan Cox
2012-09-21 20:34 ` Russell King - ARM Linux
2012-09-21 20:55 ` Alan Cox [this message]
2012-09-25 18:48 ` Linus Walleij
2012-09-25 19:00 ` Alan Cox
2012-09-26 8:06 ` Linus Walleij
2012-09-26 10:04 ` Alan Cox
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