[PATCH] telit: support RS232 modems

Dan Williams dcbw at redhat.com
Mon Mar 13 17:58:06 UTC 2017


On Mon, 2017-03-13 at 17:44 +0100, Aleksander Morgado wrote:
> On Mon, Mar 13, 2017 at 5:33 PM, Dan Williams <dcbw at redhat.com>
> wrote:
> > > Adding the vendor string match allows us to support RS232 devices
> > > in
> > > the Telit plugin: the USB vendor id check may now be ignored and
> > > instead we probe for the vendor string via AT commands, which
> > > works
> > > even if the device is behind a USB<->RS232 adapter.
> > > 
> > > https://bugs.freedesktop.org/show_bug.cgi?id=100171
> > > ---
> > > 
> > > Hey hey,
> > > 
> > > This patch enables support for RS232 modems in the Telit plugin;
> > > this
> > > is, modems that are connected to a system via a RS232 port, or
> > > via a
> > > USB<->RS232 adapter.
> > > 
> > > Comments?
> > 
> > Should this be paired with a patch adding Gobi capability to the
> > telit
> > driver, so that we don't capture Gobi-type devices as AT-only?  Or
> > is
> > that not a problem?
> > 
> > (eg, per our discussion about just using vendor ID instead of udev
> > tags; this is the same result just different approach, no?)
> 
> No, that's unrelated to our IRC discussion, I still plan in looking
> at
> trying to remove the necessity of the TELIT udev flag.
> 
> With this patch on, a Telit RS232 modem still needs the udev tag in
> the appropriate port to get it grabbed by the Telit plugin. Without
> this patch, the telit plugin would not grab this patch even if the
> udev tag is set because the vid/pid filter would filter it out.

Ok, lgtm then.

Dan


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