Flush serial port

[James Liggett]

Hi Uwe,
In my opinion, I do think something is amiss with Wine's handling of
serial port data after a program is done with them. Case in point: I've
been able to sync a serial Palm cradle with wine on the first try. After
that, Hotsync doesn't pick up the palm. I have to reboot before it works
again. Maybe a flush is necessary after all. Might the corrected patch
help the problem? ;-)

James Liggett

On Sun, 2005-07-31 at 16:12 +0200, Uwe Bonnes wrote:
> >>>>> "Alexandre" == Alexandre Julliard <julliard at winehq.org> writes:
> 
>     Alexandre> Uwe Bonnes <bon at elektron.ikp.physik.tu-darmstadt.de> writes:
>     >> Changelog: wine/server/file.c: create_file() If we open a serial
>     >> device, flush it
> 
>     Alexandre> This should be done in serial.c, but could you please explain
>     Alexandre> why this is necessary?
> 
> Testing with the loopback adapter again, it clearly shows that flush is
> necessary. I am not sure, if the flush should be done on open or close. I
> decided to go for flushing with open().
> If you want to test yourself, shortcut RXD to TXD and run the
> kernel/test/comm.c with  LOOPBACK_TXD_RXD set to TRUE. The test for cbInQue
> == 0 in test_ClearCommErrors() will fail with a newly opended FileHandle
> when something was put into the receive buffer before. The test succeeds on XP.
> 
> A corrected patch is in wine-patches.
>