Re: [PATCH 2/4] serial: 8250: export serial8250_get_baud_rate()

[Andy Shevchenko]

On Fri, Jul 10, 2026 at 10:49:27AM +0200, Christian Marangi wrote:
> On Fri, Jul 10, 2026 at 11:20:48AM +0300, Andy Shevchenko wrote:
> > On Thu, Jul 09, 2026 at 11:39:32PM +0200, Christian Marangi wrote:
> > > On Fri, Jul 10, 2026 at 12:35:02AM +0300, Andy Shevchenko wrote:
> > > > On Thu, Jul 09, 2026 at 10:56:50PM +0200, Christian Marangi wrote:
> > > > > Some driver might need to access the current baud rate to correctly
> > > > > configure it.
> > > > > 
> > > > > Export the serial8250_get_baud_rate() function to limit code duplication.
> > > > 
> > > > Why?
> > > > 
> > > > We have _get_divisor() / _set_divisor() for exactly that purpose, no?
> > > 
> > > I can only see set and I'm not following how that helps with any driver
> > > that needs to get the baud_rate?
> > 
> > You operate on the divisor settings instead of baud rate. Otherwise, can
> > you elaborate why no other (out of dozens!) driver needs this? What do
> > you try to achieve with the baud rate settings exactly?
> 
> Ok it wasn't easy to find but you were referring to the .set_divisor and
> .get_divisor. Now it's clear. Yes I guess I can use them instead of
> exporting this function.
> 
> Sorry for the noise and thanks for the suggestion! 

Ah, it was me a bit unclear, By _*_divisor() I referred to the wrappers
on top of .set_divisor() and .get_divisor(), I should have spelled that
more clearly. In any case the driver is suppose to fill callbacks and 8250
set_termios() will use that.

-- 
With Best Regards,
Andy Shevchenko