A series patches to address three issues one customer managed to hit all at once.

1) Rewrite pericom_do_set_divisor() to always calc divisor and to use the
uartclk instead of a hard coded value. Always calculate divisor without passing
control to serial8250_do_set_divisor()
Tested with 14.7456 and 24 MHz crystals

2) Re-enable higher baud rates on Pericom chips.
serial8250_get_baud_rate() added range checking, but Pericom chips have a wider
range than what is being enforced. Make use of UPF_MAGIC_MULTIPLIER.
Tested with 14.7456 and 24 MHz crystals

3) Fourth port not being setup correctly on some Pericom chips.
Fix entries in pci_serial_quirks array


Jay Dolan (3):
  serial: 8250_pci: rewrite pericom_do_set_divisor
  serial: 8250_pci: Re-enable higher baud rates on Pericom chips
  serial: 8250_pci: Fix ACCES entries in pci_serial_quirks array

 drivers/tty/serial/8250/8250_pci.c | 44 +++++++++++++++++++++---------
 1 file changed, 31 insertions(+), 13 deletions(-)

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2.25.1