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Re: patch - at91 serial drivers assumed realtime response for DSR routines

> So here's my version of the AT91 serial driver. It
[...]
>-    serial_channel *chan = (serial_channel *)tab->priv;
>+    serial_channel * const chan = (serial_channel *)tab->priv;

do these changes to const result in gcc optimizing better or why are
they made?
thanks

Jani
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