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linux/arch/mips/ar7
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Jonas Gorski 0a5191efe0 MIPS: AR7: ensure the port type's FCR value is used 
Since commit aef9a7bd9b ("serial/uart/8250: Add tunable RX interrupt
trigger I/F of FIFO buffers"), the port's default FCR value isn't used
in serial8250_do_set_termios anymore, but copied over once in
serial8250_config_port and then modified as needed.

Unfortunately, serial8250_config_port will never be called if the port
is shared between kernel and userspace, and the port's flag doesn't have
UPF_BOOT_AUTOCONF, which would trigger a serial8250_config_port as well.

This causes garbled output from userspace:

[    5.220000] random: procd urandom read with 49 bits of entropy available
ers
   [kee

Fix this by forcing it to be configured on boot, resulting in the
expected output:

[    5.250000] random: procd urandom read with 50 bits of entropy available
Press the [f] key and hit [enter] to enter failsafe mode
Press the [1], [2], [3] or [4] key and hit [enter] to select the debug level

Fixes: aef9a7bd9b ("serial/uart/8250: Add tunable RX interrupt trigger I/F of FIFO buffers")
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@hitachi.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Nicolas Schichan <nschichan@freebox.fr>
Cc: linux-mips@linux-mips.org
Cc: linux-serial@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17544/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
History 2018-01-10 11:34:56 +01:00
..
clock.c MIPS: AR7: allow NULL clock for clk_get_rate 2017-09-06 12:35:21 +02:00
gpio.c MIPS: Audit and remove any unnecessary uses of module.h 2017-02-14 09:00:25 +00:00
irq.c MIPS: Mark cascade and low level interrupts IRQF_NO_THREAD 2011-09-21 17:52:15 +02:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
memory.c MIPS: Audit and remove any unnecessary uses of module.h 2017-02-14 09:00:25 +00:00
Platform MIPS: Whitespace cleanup. 2013-02-01 10:00:22 +01:00
platform.c MIPS: AR7: ensure the port type's FCR value is used 2018-01-10 11:34:56 +01:00
prom.c MIPS: AR7: Defer registration of GPIO 2017-11-08 12:44:26 +00:00
setup.c MIPS: Remove all the uses of custom gpio.h 2015-09-03 12:08:02 +02:00
time.c MIPS: Restore init.h usage to arch/mips/ar7/time.c 2014-03-26 23:09:23 +01:00