From: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Date: Mon, 17 Dec 2012 23:59:58 +0000 (-0800)
Subject: lib/vsprintf.c: fix handling of %zd when using ssize_t
X-Git-Tag: v3.8-rc1~74^2~159
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ef12496022d5917cfe0b04cf8fd685fc6bc08400;p=pandora-kernel.git

lib/vsprintf.c: fix handling of %zd when using ssize_t

Documentation/printk-formats.txt says to use %zd for a ssize_t argument
and some drivers do.  Unfortunately this prints a positive number for
negative values eg:

  tpm_tis 70030000.tpm_tis: tpm_transmit: tpm_send: error 4294967234

Add a case to va_args a ssize_t type if the interpretation should be
signed.

Tested on PPC32.

Signed-off-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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