> Is this your "modified" driver?
   
  No..It's pl2303.

quoted text
> 
> I don't see that error in the kernel log below at all.

 sometimes I got that error.
 
quoted text
> What kernel version is this?

 2.6.35

quoted text
> And are you sure that your device actually has the RTS lines connected?
> I have seen a number of these devices that do not bring those lines from
> the chip to the rs232 connection.

I have connected a RS-485 interface card to this usb-to-serial converter which has
MAX-485 IC ( Line driver chip which convert RS-232 to RS-485),of which pin number 2 is
for RTS line.

Through my modified pl2303 device driver, I am able to enable/disable the RTS line as
per my need,as I told in my earlier email.

quoted text
> You really might want to go purchase a "real" usb to serial converter
> that works properly, the pl2303 devices do not fit that category.

Yes, I am also thinking of purchasing a "real" usb to serial converter.

Thanks a lot Greg, I have learned a lot interacting with you.


Thanks-
Raj
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