Robert Jarzmik [off-list ref] writes:

Sergei Ianovich [off-list ref] writes:

quoted

pxa2xx-uart was a separate uart platform driver. It was declaring
the same device names and numbers as 8250 driver. As a result,
it was impossible to use 8250 driver on PXA SoCs.

Upon closer examination pxa2xx-uart turned out to be a clone of
8250_core driver.

Workaround for Erratum #19 according to Marvel(R) PXA270M Processor
Specification Update (April 19, 2010) is dropped. 8250_core reads
from FIFO immediately after checking DR bit in LSR.

Signed-off-by: Sergei Ianovich <redacted>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Reviewed-by: James Cameron <redacted>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Tested-by: Robert Jarzmik <robert.jarzmik@free.fr>

Shrunk the list, the following is rather mach-pxa specific.

Actually there is a small glitch ...
Have a look at arch/arm/mach-pxa/viper.c, line 490:
	#ifndef CONFIG_SERIAL_PXA
	...

But that can be handled in an subsequent patch to keep your acks and reviews.

Cheers.

-- 
Robert