linux-kernel - Re: Configuring previously loaded module

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Message-ID: <fb4a4650708271443v221bdf8aq74f2ee8401479136@mail.gmail.com>
Date:	Mon, 27 Aug 2007 18:43:04 -0300
From:	"Thiago Ramos dos Santos" <dimtracker@...il.com>
To:	"Kay Sievers" <kay.sievers@...y.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: Configuring previously loaded module

It worked.
Thanks a lot.

Thiago

On 8/26/07, Kay Sievers <kay.sievers@...y.org> wrote:
> On 8/27/07, Thiago Ramos dos Santos <dimtracker@...il.com> wrote:
> > I have 2 devices which use the usbserial module: a CDMA modem and a
> > Palm PDA (to be more especific, the PDA uses the visor module, which
> > uses the usbserial).
> > When I plug the PDA to the computer, the visor module gets
> > automatically loaded by the kernel, and so is the usbserial module.
> > When the modem is pluged, the module is not loaded automaticaly, so I
> > created a hotplug entry for it.
> > For both devices I put rules in udev configuration files, so they are
> > autmaticaly mapped to the same /dev node in despite of the ttyUSB*
> > node they are mapped to.
> >
> > The problem is that the modem requires the usbserial module to be
> > loaded with some parameters: product=xxxxx vendor=xxxxx. So, if I plug
> > the PDA first, the usbserial is loaded without those parameters, and
> > when the modem is pluged, the ttyUSB nodes are not created for it. So
> > I have to manually unload both the visor and usbserial modules, reload
> > the usbserial with the specific parameters (to get the ttyUSB nodes
> > for the modem) and reload the visor module (to recreate the ttyUSB
> > nodes for the PDA).
> >
> > Is there anyway to configure the previously loaded usbserial module
> > with the modem parameters without having to unload it? If it is not
> > possible, is there any other solution?
>
> Try putting:
>   options usbserial product=xxxxx vendor=xxxxx
> in:
>   /etc/modprobe.d/serial
>
> Kay
>
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