linux-kernel - Re: [RFC/context] add serdev interfaces to n

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Message-ID: <20210210212836.GA18497@duo.ucw.cz>
Date:   Wed, 10 Feb 2021 22:28:36 +0100
From:   Pavel Machek <pavel@....cz>
To:     Johan Hovold <johan@...nel.org>, Greg KH <greg@...ah.com>
Cc:     kernel list <linux-kernel@...r.kernel.org>,
        phone-devel@...r.kernel.org, tony@...mide.com
Subject: Re: [RFC/context] add serdev interfaces to n_gsm

Hi!

> > > +config GNSS_MOTMDM
> > > +	tristate "Motorola Modem TS 27.010 serdev GNSS receiver support"
> > > +	depends on SERIAL_DEV_N_GSM
> > 
> > You need to post this driver together with the serdev-ngsm driver. This
> > one cannot currently even be built without it, but we also need to see
> > the greater picture here.
> 
> Well, here it is, for greater picture. But it is not ready. Current
> problem I have is gsm_serdev_register_tty_port(). The way I do
> platform device registration causes oops on module unload. Help with
> that would be welcome

I would not mind comments on parent patch and some help here.

Basically I tried to work around limitation in 

int serdev_device_add(struct serdev_device *serdev)
{
...
       /* Only a single slave device is currently supported. */
       if (ctrl->serdev) {
...
                   return -EBUSY;

Best regards,
								Pavel 

-- 
http://www.livejournal.com/~pavelmachek

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