From: Matt Fleming <matt.fleming@intel.com>
Date: Mon, 29 Apr 2013 19:08:02 +0000 (+0100)
Subject: efi, pstore: Read data from variable store before memcpy()
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~75^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8a415b8c05f261a52f45f2271b6c4731376fd5b5;p=pandora-kernel.git

efi, pstore: Read data from variable store before memcpy()

Seiji reported getting empty dmesg-* files, because the data was never
actually read in efi_pstore_read_func(), and so the memcpy() was copying
garbage data.

This patch necessitated adding __efivar_entry_get() which is callable
between efivar_entry_iter_{begin,end}(). We can also delete
__efivar_entry_size() because efi_pstore_read_func() was the only
caller.

Reported-by: Seiji Aguchi <seiji.aguchi@hds.com>
Tested-by: Seiji Aguchi <seiji.aguchi@hds.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Matthew Garrett <matthew.garrett@nebula.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
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