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Date:	Fri, 28 Jun 2013 09:30:39 -0700
From:	Joe Perches <joe@...ches.com>
To:	Daniel Borkmann <dborkman@...hat.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org,
	linux-sctp@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v3 1/2] lib: vsprintf: add IPv4/v6 generic
 %p[Ii]S[pfs] format specifier

On Fri, 2013-06-28 at 14:05 +0200, Daniel Borkmann wrote:

> +static noinline_for_stack
> +char *ip4_addr_string_sa(char *buf, char *end, const struct sockaddr_in *sa,
> +			 struct printf_spec spec, const char *fmt)
> +{
> +	bool have_p = (fmt[2] && fmt[2] == 'p');

	bool have_p = fmt[2] == 'p';

you don't need the first "fmt[2] &&"
but I can imagine a case where the other flow/scope types
could be specified generically and the 'p' may not be in
array index 2

I think you should probably do the same while loop like
the ip6_addr_string_sa block.

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