Peter Korsgaard wrote:
"David" == David H Lynch <dhlii@xxxxxxxxxx> writes:
Hi,
David> You need an "early_serial_setup()" routine inside the
David> CONFIG_SERIAL_UARTLITE_CONSOLE code.
Isn't that just for early serial support?
Honestly, I can not tell. It is implimented in 8250.c, and I think
some other drivers. I think it was related to early_serial. But I think
that is now moved into the main driver, not a separate early_serial driver.
I stubbed it out to nothing just to make the linker happy and
noticed no obvious difference in behavior. But due to printk buffering,
it might be very hard to see a difference - unless there was an early
failure.
What I know is that:
the ml403 8250 support (as well as many other drivers),
impliment it
that they pass a uart_port structure
and that it may be called for each port,
I beleive that it may be more important than the uartlite_tty.c and
uartlite_dbg.c that get used very breifly by much earlier code.
But I am just guessing.
I know that my driver impliments it and as a result I usually see
messages up to the moment of failure when there is a failure, and do not
get into a bind because they are stuck in a printk buffer.
--
Dave Lynch DLA Systems
Software Development: Embedded Linux
717.627.3770 dhlii@xxxxxxxxxx http://www.dlasys.net
fax: 1.253.369.9244 Cell: 1.717.587.7774
Over 25 years' experience in platforms, languages, and technologies too numerous to list.
"Any intelligent fool can make things bigger and more complex... It takes a touch of genius - and a lot of courage to move in the opposite direction."
Albert Einstein
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