linux-kernel - [PATCH v3 0/2] serial: 8250_pci patches to address issues with pericom_do_set

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Message-Id: <20211122120604.3909-1-andriy.shevchenko@linux.intel.com>
Date:   Mon, 22 Nov 2021 14:06:02 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-serial@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Jiri Slaby <jirislaby@...nel.org>,
        Jay Dolan <jay.dolan@...esio.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v3 0/2] serial: 8250_pci patches to address issues with pericom_do_set_divisor()

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(-)

-- 
2.33.0