On Sat, 2006-06-24 at 13:13 +0200, Guennadi Liakhovetski wrote:
> Without my patch this is the first call to set_termios in pl2303 and the 
> termios struct is overwritten with defaults (anybody has an idea why?) and 
> the baudrate is set to 9600. AFAIU set_termios is called normally from 
> ->open(), explicitely from ioctl(), or from usb_console_setup. So, apart 
> from the latter case an ->open() always precedes ->set_termios(). 
> Therefore moving that first time overwrite to ->open() should preserve the 
> normal behaviour. Whereas with console ->open() in pl2303 returns 
> immediately because ->tty = NULL, and now with this patch the subsequent 
> call to ->set_termios() does set the correct baudrate.

OK, I get it.
Moving the termios init from set_termios to open has the
effect of never executing the termios init code for
the console setup (in either open or set_termios).

--

I don't know why this driver insists on overwriting an
existing termios structure. It should use default settings
or do nothing at all if termios == NULL, otherwise it
should use the termios supplied to it. I think that code
could simply be dropped.

--
Paul


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