From: Seiji Aguchi <seiji.aguchi@hds.com>
Date: Wed, 14 Nov 2012 20:28:50 +0000 (+0000)
Subject: efi_pstore: Add a format check for an existing variable name at reading time
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~63^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0f7de85a94de553c6cb222b70ac4032d265b362d;p=pandora-kernel.git

efi_pstore: Add a format check for an existing variable name at reading time

[Issue]

a format of variable name has been updated to type, id, count and ctime
to support holding multiple logs.

Format of current variable name
  dump-type0-1-2-12345678

  type:0
  id:1
  count:2
  ctime:12345678

On the other hand, if an old variable name before being updated
remains, users can't read it via /dev/pstore.

Format of old variable name
  dump-type0-1-12345678

  type:0
  id:1
  ctime:12345678

[Solution]

This patch add a format check for the old variable name in a read callback
to make it readable.

Signed-off-by: Seiji Aguchi <seiji.aguchi@hds.com>
Acked-by: Mike Waychison <mikew@google.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
---

Reading git-diff-tree failed