[PATCH 4/8] console: introduce startup and shutdown

[Sascha Hauer]

On Fri, Sep 27, 2013 at 11:03:57AM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 10:55 Fri 27 Sep     , Sascha Hauer wrote:
> > On Fri, Sep 27, 2013 at 09:14:14AM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > > so enable the uart only if used
> > > so linux can detect the right one enable if it want
> > > +{
> > > +	int ret;
> > > +
> > > +	if (cdev->f_active)
> > > +		return 0;
> > > +
> > > +	if (cdev->startup) {
> > > +		ret = cdev->startup(cdev);
> > > +		if (ret)
> > > +			return ret;
> > > +	}
> > > +
> > > +	if (cdev->setbrg) {
> > > +		cdev->baudrate = CONFIG_BAUDRATE;
> > 
> > I believe cdev->baudrate should be set only once during initialization.
> > When I deactivate a console and activate it again I don't expect the
> > baudrate to be changed to it's default value.
> 
> maybe but if the device is not a console but rs485 you never set the baudrate
> today same if a device is never active
> 
> as example use a non active device for loadxy
> 
> so I'm think that the console_open is more like man 2 open + ioctl to use a
> cdev

Put a cdev->baudrate = CONFIG_BAUDRATE in console_register() instead of
console_open. This doesn't affect RS485 at all but fixes the behaviour i
moaned about.

Sascha


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