linux-kernel - Re: [PATCH] vsprintf: add Bluetooth UUID %pU[rR] format specifier

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Message-ID: <1382222601.2041.31.camel@joe-AO722>
Date:	Sat, 19 Oct 2013 15:43:21 -0700
From:	Joe Perches <joe@...ches.com>
To:	Marcel Holtmann <marcel@...tmann.org>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] vsprintf: add Bluetooth UUID %pU[rR] format specifier

On Sun, 2013-10-20 at 00:30 +0200, Marcel Holtmann wrote:
> Hi Joe,

Hi Marcel

> > Could there ever be a little endian reversed UUID?
> I honestly do not know. I looked at the little endian one and it
> looked a bit heavy misplaced if we would use a reversed stream of
> bytes.
> > Might it be useful to change this to:
> > 
> > 	while (isalpha(*++fmt)) {
> > 		switch (*fmt) {
> 
> I didn't do it so the modifier didn't get any longer than it needs to be.

Given that %pU is big endian by default, then the modifier
doesn't have to get longer.  %pUR and %pUr would still be
big endian and this would simply allow %pULR if necessary.

cheers, Joe

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