Editting wpautop Function

For the wpautop function included within “functions-formatting.php” I’d like to change the function so instead of inserting when there is a double line break, instead I’d like to insert a double <br> (p’s messing up my site layout).

So for example:
Hello my name is

gareth

would be outputted as
Hello my name is<br><br>gareth

instead of Hello my name is
gareth

I have looked at the function but can’t work out what should be change/commented out. Any help would be appreciated.

Thanks