From: Dave Jones <davej@redhat.com>
To: Yuki Cuss <celtic@sairyx.org>
Cc: David Vrabel <dvrabel@arcom.com>,
Russell King <rmk@arm.linux.org.uk>,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: serial: SERIAL_8250_RUNTIME_UARTS must be <= SERIAL_8250_NR_UARTS
Date: Mon, 6 Feb 2006 14:41:54 -0500 [thread overview]
Message-ID: <20060206194153.GA30359@redhat.com> (raw)
In-Reply-To: <43E7280B.6060607@sairyx.org>
On Mon, Feb 06, 2006 at 09:42:19PM +1100, Yuki Cuss wrote:
> David Vrabel wrote:
>
> >If SERIAL_8250_RUNTIME_UARTS is > SERIAL_8250_NR_UARTS then more serial
> >ports are registered than we've allocated memory for. Prevent this by
> >limiting SERIAL_8250_RUNTIME_UARTS in the serial Kconfig.
> >
> >Signed-off-by: David Vrabel <dvrabel@arcom.com>
> >
> >
>
> Is there any real use case for having *less* registered serial ports and
> having some spare?
Having the ability to build a kernel image which supports many serial ports,
whilst at the same same time when booted on the common-case systems with
two serial ports, not creating so many /dev/ttyS* nodes or sysfs objects
wasting ram that'll never be used or reclaimed.
Dave
next prev parent reply other threads:[~2006-02-06 19:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-06 10:27 serial: SERIAL_8250_RUNTIME_UARTS must be <= SERIAL_8250_NR_UARTS David Vrabel
2006-02-06 10:42 ` Yuki Cuss
2006-02-06 19:41 ` Dave Jones [this message]
2006-02-06 10:59 ` David Vrabel
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