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| /openbmc/linux/drivers/tty/serial/ |
| H A D | mvebu-uart.c | e0bf2d49 Sun Aug 26 12:49:32 CDT 2018 Jan Kiszka <jan.kiszka@siemens.com> serial: mvebu-uart: Fix reporting of effective CSIZE to userspace
Apparently, this driver (or the hardware) does not support character
length settings. It's apparently running in 8-bit mode, but it makes
userspace believe it's in 5-bit mode. That makes tcsetattr with CS8
incorrectly fail, breaking e.g. getty from busybox, thus the login shell
on ttyMVx.
Fix by hard-wiring CS8 into c_cflag.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Fixes: 30530791a7a0 ("serial: mvebu-uart: initial support for Armada-3700 serial port")
Cc: stable <stable@vger.kernel.org> # 4.6+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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