Re: [PATCH 3/8] console: factorise function to get the console by name

[Sascha Hauer <s.hauer@pengutronix.de>]

On Fri, Sep 27, 2013 at 10:58:47AM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 10:50 Fri 27 Sep     , Sascha Hauer wrote:
> > On Fri, Sep 27, 2013 at 09:14:13AM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> > > rename it to console_get_by_name
> > > 
> > > +struct console_device *console_get_by_name(const char *cname)
> > > +{
> > > +	struct console_device *cdev;
> > > +	const char *target;
> > > +
> > > +	for_each_console(cdev) {
> > > +		target = dev_id(&cdev->class_dev);
> > > +		if (strcmp(cname, target))
> > > +			continue;
> > > +		if ((cdev->f_active & (CONSOLE_STDIN | CONSOLE_STDOUT))
> > > +			return cdev;
> > > +		return NULL;
> > > +	}
> > > +	return NULL;
> > > +}
> > > +EXPORT_SYMBOL(console_get_by_name);
> > 
> > I know this patch doesn't change the current behaviour, but a common
> > function console_get_by_name() should return return the console by name
> > regardless of whether it's active or not.
> 
> I change it behaviour later as now this function will check the console
> feature
> 
> as the current implemetation do it too but in the wrong way
> > 
> > For the loadx code this would be a net win aswell. I think this code
> > should not depend on an active console but the other way round: It
> > should clear the CONSOLE_STDIN/CONSOLE_STDOUT during loadx operation.
> > This way we could easily make sure there are no printf message garbling
> > the line during transfers and still we could have console messages on
> > other consoles.
> 
> patch 8 finaly clean it

?

patch 8/8 is an atmel serial driver specific patch that changes nothing
in this regard.

What I mean is that the loadx stuff should do a cdev->active = 0 so that
during transfers printf is still possible without corrupting the
transfers. This behaviour is not changed in this series.


Sascha

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