From: Johannes Berg <johannes.berg@intel.com>
Date: Tue, 31 Mar 2015 07:12:54 +0000 (+0200)
Subject: iwlwifi: mvm: do string formatting in debug triggers
X-Git-Tag: omap-for-v4.2/o2_dc~131^2~39^2~6^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5d4f929e3d0c09838677a116ffd168d9d519ada7;p=pandora-kernel.git

iwlwifi: mvm: do string formatting in debug triggers

The current code has a lot of duplicates of printing into a buffer
(while having to make sure it's NUL-filled and -terminated) and
then passing that to the debug trigger collection.

Since that's error-prone, instead make the debug trigger collection
function take a format string and format arguments (with compiler
validity checking) and handle the buffer internally.

This makes one behavioural change -- instead of sending the whole
buffer to userspace (clearing is needed to not leak stack data) it
just passes the actual string (including NUL-terminator.)

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
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