mbox series

[v3,0/2] serial: 8250_pci patches to address issues with pericom_do_set_divisor()

Message ID 20211122120604.3909-1-andriy.shevchenko@linux.intel.com
Headers show
Series serial: 8250_pci patches to address issues with pericom_do_set_divisor() | expand

Message

Andy Shevchenko Nov. 22, 2021, 12:06 p.m. UTC 
A series patches to address three issues one customer managed to hit
all at once.

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

2) 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().

Jay, can you test this again, please?

Changelog v3:
- fix possible division by 0 in patch 2 (Jay)

Changelog v2:
- dropped no-fixes patch, left only fixes here
- amended refactoring of the ->set_divisor()
- fixed Fixes tags

Jay Dolan (2):
  serial: 8250_pci: Fix ACCES entries in pci_serial_quirks array
  serial: 8250_pci: rewrite pericom_do_set_divisor()

 drivers/tty/serial/8250/8250_pci.c | 39 +++++++++++++++++++-----------
 1 file changed, 25 insertions(+), 14 deletions(-)