My preferred coding style happens to be Whitesmiths. (Go ahead and laugh, but I'm used to it.)
Since not much new stuff outside of my own is written in Whitesmith's style, I use astyle to reformat the the other guy's code if I'm going to be studying it or adding to it or whatever. I actually have astyle fully integrated into both Geany and vim (the two code editors that I use) so I can reformat code instantly on demand.
I've never paid much attention to comment styles as such, but I'm sure that you can use astyle to reformat that if you want to; it has a million-and-one options available to put out all sorts of cats and make coffee.
So if Linus or anyone else doesn't like a C style, it takes almost no effort to reformat it to the style that you want. Then everyone gets to look at and use what he's comfortable with, and there's no friction at all.