From 899f0c1c7dbcc487fdc8756a49ff70b1d5d75f89 Mon Sep 17 00:00:00 2001
From: Soeren Grunewald <soeren.grunewald@desy.de>
Date: Thu, 11 Jun 2015 09:25:05 +0200
Subject: [PATCH] serial: 8250_pci: Correct uartclk for xr17v35x expansion
 chips

The internal clock of the master chip, which is usually 125MHz, is only half
(62.5MHz) for the slave chips. So we have to adjust the uartclk for all the
slave ports. Therefor we add a new function to determine if a slave chip is
present and update pci_xr17v35x_setup accordingly.

Signed-off-by: Soeren Grunewald <soeren.grunewald@desy.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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