[5/5] USB: serial: cp210x: improve line-speed handling for CP2104 and CP2105

[Johan Hovold <johan@kernel.org>]

On Wed, Jul 18, 2018 at 03:26:30PM +0200, Greg Kroah-Hartman wrote:
> On Wed, Jul 18, 2018 at 02:25:01PM +0200, Johan Hovold wrote:
> > CP2104 and the ECI interface of CP2105 support further baud rates than
> > the ones specified in AN205 table 1, and we can use the same equations
> > as for CP2102N to determine and report back the actual baud rates used.
> > 
> > Note that this could eventually be generalised also to CP2108, which
> > uses a different base clock. There appears to be an error in the CP2108
> > equations which needs to be confirmed on actual hardware first however
> > (specifically, the subtraction of one from the divisor appears to be
> > incorrect as it introduces larger errors).
> > 
> > Signed-off-by: Johan Hovold <johan@kernel.org>
> > ---
> >  drivers/usb/serial/cp210x.c | 9 +++++++--
> >  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Thanks for reviewing, all now applied.

Johan
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