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From: Bjorn Helgaas <bjorn.helgaas@hp.com>
To: Russell King <rmk+lkml@arm.linux.org.uk>
Cc: Michael Tokarev <mjt@tls.msk.ru>, Adam Belay <ambx1@neo.rr.com>,
	matthieu castet <castet.matthieu@free.fr>,
	Andrew Morton <akpm@osdl.org>,
	linux-kernel@vger.kernel.org
Subject: Re: PNP parallel&serial ports: module reload fails (2.6.11)?
Date: Fri, 10 Jun 2005 10:01:40 -0600	[thread overview]
Message-ID: <200506101001.40980.bjorn.helgaas@hp.com> (raw)
In-Reply-To: <20050609221657.C14513@flint.arm.linux.org.uk>

On Thursday 09 June 2005 3:16 pm, Russell King wrote:
> The reason that 8250 first detects your ports is that they're found
> via the legacy method which is independent of PnP.  As you correctly
> sumise, when you unload 8250_pnp, it disables the device so when you
> re-load 8250, it's unable to detect your ports using the legacy method.
> 
> But the legacy method needs to continue to exist for systems which
> don't have PnP enabled.

But shouldn't we someday move the legacy probing from 8250
into an 8250_platform and only do it if we don't have 8250_pnp?

I think David Woodhouse suggested something like this a while
back, but I can't find a great reference for it.  Here's a
thread (unfortunately split into sections by the archive)
that mentions it:

http://www.ussg.iu.edu/hypermail/linux/kernel/0409.3/1545.html
http://www.ussg.iu.edu/hypermail/linux/kernel/0410.0/0084.html
http://www.ussg.iu.edu/hypermail/linux/kernel/0411.0/0127.html


  reply	other threads:[~2005-06-10 16:01 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-06-02 22:24 castet.matthieu
2005-06-03  0:18 ` PNP " Michael Tokarev
2005-06-03  5:58   ` matthieu castet
2005-06-05 10:14   ` matthieu castet
2005-06-05 10:27   ` matthieu castet
2005-06-06 15:01     ` Michael Tokarev
2005-06-06 15:43       ` castet.matthieu
2005-06-06 21:18       ` Adam Belay
2005-06-06 22:43         ` Michael Tokarev
2005-06-08  9:52           ` Adam Belay
2005-06-08 20:29             ` Michael Tokarev
2005-06-08 23:52               ` Adam Belay
2005-06-09 21:07                 ` Michael Tokarev
2005-06-09 21:16                   ` Russell King
2005-06-10 16:01                     ` Bjorn Helgaas [this message]
2005-06-10 16:20                       ` Dmitry Torokhov
2005-06-10 16:26                         ` Bjorn Helgaas
2005-06-10 16:30                       ` Russell King
2005-06-14 19:40                   ` Adam Belay
  -- strict thread matches above, loose matches on Subject: below --
2005-05-31 23:01 Michael Tokarev
2005-06-01  5:04 ` Andrew Morton
2005-06-01 15:20   ` Michael Tokarev

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