Messages in this thread | | | Date | Fri, 18 Apr 2014 16:53:33 -0700 | Subject | Re: [PATCH] kdb: Put a cr before lf when working w/ a non open console port | From | Doug Anderson <> |
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Hi,
On Fri, Apr 18, 2014 at 10:17 AM, Doug Anderson <dianders@chromium.org> wrote: > In (efe2f29 kgdboc,kdb: Allow kdb to work on a non open console port) > support was added to directly use the "write_char" functions when > doing kdb over a non-open console port. This is great, but it ends up > bypassing the normal code in uart_console_write() that adds a carriage > return before any newlines. > > Add similar code in kdb so we don't get things like: > [0]kdb> > [0]kdb> > [0]kdb> > > Signed-off-by: Doug Anderson <dianders@chromium.org> > --- > kernel/debug/kdb/kdb_io.c | 6 ++++++ > 1 file changed, 6 insertions(+)
I've been digging through the code and I've finally figured out where this happens on some other platforms (I'm using samsung/serial myself).
The 8250 driver has it hardcoded in serial8250_put_poll_char(). Next week I'll include a removal of that code with v2 of this patch unless I hear any objections. I think doing things in kdb_io is nice because:
* we don't need to duplicate the code in everyone's "put_poll_char" functions.
* we don't end up running the code in kgdb mode, only in kdb mode.
I could also move my change to be in uart_poll_put_char() which _would_ (I believe) apply to both kdb / kgdb if that was desirable for some reason.
-Doug
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