Serial interface sends one bit upon open()

[ACDCLabs]

I'm trying to set up a serial communication between the RPI and an
FPGA. However, there is an issue when using the standard C library
open() to init the serial interface: I'm using a scope to monitor what
is sent and received via the RX and TX lines. A call to open causes
the TX line of the RPI to go low for the length of one bit. I do not
see this behavior with other computers/linux PCs. The point is, the
FPGA assumes a valid transmission, since he thinks it's a start bit,
but it's not.

I checked with minicom installed on the RPI. Same thing. Starting
minicom causes the TX line sending one bit. Once minicom has started,
the communication runs as expected and all bytes have the correct
frame size. Is there any way to suppress the TX line going low upon
the open call to init the serial communication? A smart guy at
stackoverflow suggested:

http://stackoverflow.com/questions/14579974/init-a-serial-
communication-with-c-library-open-causes-tx-to-send-one-bit-on-r

Thanks
N.

[popcornmix]

I did remove that code:
316fb19
but unfortunately it broke using the serial for console output, so that change got reverted shortly afterwards.

[popcornmix]

Duplicate of:
#148

[popcornmix]

Patch has been merged and is in latest rpi-update firmware.
Can you test?