Andy Shevchenko c14b65feac serial: 8250_dw: Revert "Improve clock rate setting" ...

The commit

  de9e33bdfa ("serial: 8250_dw: Improve clock rate setting")

obviously tries to cure symptoms, and not a root cause.

The root cause is the non-flexible rate calculation inside the
corresponding clock driver. What we need is to provide maximum UART
divisor value to the clock driver to allow it do the job transparently
to the caller.

Since from the initial commit message I have got no clue which clock
driver actually needs to be amended, I leave this exercise to the people
who know better the case.

Moreover, it seems [1] the fix introduced a regression. And possible
even one more [2].

Taking above, revert the commit de9e33bdfa for now.

[1]: https://www.spinics.net/lists/linux-serial/msg28872.html
[2]: https://github.com/Dunedan/mbp-2016-linux/issues/29#issuecomment-357583782

Fixes: de9e33bdfa ("serial: 8250_dw: Improve clock rate setting")
Cc: stable <stable@vger.kernel.org> # 4.15
Cc: Ed Blake <ed.blake@sondrel.com>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2018-01-22 14:13:40 +01:00

..

hvc

Merge tag 'tty-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2017-11-13 21:05:31 -08:00

ipwireless

treewide: setup_timer() -> timer_setup()

2017-11-21 15:57:07 -08:00

serdev

serdev: Fix serdev_uevent failure on ACPI enumerated serdev-controllers

2018-01-09 16:49:27 +01:00

serial

serial: 8250_dw: Revert "Improve clock rate setting"

2018-01-22 14:13:40 +01:00

vt

tty: vt: replace _manual_ swap with swap macro in set_selection

2017-11-28 15:32:32 +01:00

amiserial.c

tty: add SPDX identifiers to all remaining files in drivers/tty/

2017-11-08 13:08:12 +01:00

bfin_jtag_comm.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

cyclades.c

treewide: Switch DEFINE_TIMER callbacks to struct timer_list *

2017-11-21 15:57:05 -08:00

ehv_bytechan.c

tty: ehv_bytechan: fix spelling mistake

2017-11-08 14:27:10 +01:00

goldfish.c

tty: goldfish: Enable 'earlycon' only if built-in

2017-12-15 20:27:44 +01:00

isicom.c

tty/isicom: Fix a possible sleep-in-atomic bug in WaitTillCardIsFree

2017-12-15 20:24:14 +01:00

Kconfig

tty: goldfish: Enable 'earlycon' only if built-in

2017-12-15 20:27:44 +01:00

Makefile

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

metag_da.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

mips_ejtag_fdc.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

moxa.c

tty: moxa: Add support for CMSPAR

2017-11-28 15:32:33 +01:00

moxa.h

tty: moxa: Add support for CMSPAR

2017-11-28 15:32:33 +01:00

mxser.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

mxser.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

n_gsm.c

tty: n_gsm: Allow ADM response in addition to UA for control dlci

2018-01-09 16:45:17 +01:00

n_hdlc.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

n_null.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

n_r3964.c

treewide: setup_timer() -> timer_setup()

2017-11-21 15:57:07 -08:00

n_tracerouter.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

n_tracesink.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

n_tracesink.h

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

n_tty.c

n_tty: fix EXTPROC vs ICANON interaction with TIOCINQ (aka FIONREAD)

2017-12-21 11:19:22 +01:00

nozomi.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

pty.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rocket_int.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

rocket.c

treewide: Switch DEFINE_TIMER callbacks to struct timer_list *

2017-11-21 15:57:05 -08:00

rocket.h

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

synclink_gt.c

treewide: setup_timer() -> timer_setup()

2017-11-21 15:57:07 -08:00

synclink.c

treewide: setup_timer() -> timer_setup()

2017-11-21 15:57:07 -08:00

synclinkmp.c

treewide: setup_timer() -> timer_setup()

2017-11-21 15:57:07 -08:00

sysrq.c

Merge tag 'tty-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2017-11-13 21:05:31 -08:00

tty_audit.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

tty_baudrate.c

tty: add SPDX identifiers to all remaining files in drivers/tty/

2017-11-08 13:08:12 +01:00

tty_buffer.c

tty: add SPDX identifiers to all remaining files in drivers/tty/

2017-11-08 13:08:12 +01:00

tty_io.c

pty: cancel pty slave port buf's work in tty_release

2017-12-19 09:59:51 +01:00

tty_ioctl.c

tty: add SPDX identifiers to all remaining files in drivers/tty/

2017-11-08 13:08:12 +01:00

tty_jobctrl.c

tty: add SPDX identifiers to all remaining files in drivers/tty/

2017-11-08 13:08:12 +01:00

tty_ldisc.c

Merge tag 'tty-4.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

2017-11-13 21:05:31 -08:00

tty_ldsem.c

tty: Remove redundant license text

2017-11-08 13:08:12 +01:00

tty_mutex.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

tty_port.c

tty: add SPDX identifiers to all remaining files in drivers/tty/

2017-11-08 13:08:12 +01:00

vcc.c

tty: vcc: Convert timers to use timer_setup()

2017-11-04 12:01:54 +01:00