From: Mimi Zohar <zohar@linux.vnet.ibm.com>
Date: Tue, 20 Sep 2011 15:23:49 +0000 (-0400)
Subject: lib: add error checking to hex2bin
X-Git-Tag: v3.2-rc1~190^2~14^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b78049831ffed65f0b4e61f69df14f3ab17922cb;p=pandora-kernel.git

lib: add error checking to hex2bin

hex2bin converts a hexadecimal string to its binary representation.
The original version of hex2bin did not do any error checking.  This
patch adds error checking and returns the result.

Changelog v1:
- removed unpack_hex_byte()
- changed return code from boolean to int

Changelog:
- use the new unpack_hex_byte()
- add __must_check compiler option (Andy Shevchenko's suggestion)
- change function API to return error checking result
  (based on Tetsuo Handa's initial patch)

Signed-off-by: Mimi Zohar <zohar@linux.vnet.ibm.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
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