From: Linn Crosetto <linn@hp.com>
Date: Tue, 13 Aug 2013 21:46:41 +0000 (-0600)
Subject: x86: avoid remapping data in parse_setup_data()
X-Git-Tag: v3.12-rc1~157^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=30e46b574a1db7d14404e52dca8e1aa5f5155fd2;p=pandora-kernel.git

x86: avoid remapping data in parse_setup_data()

Type SETUP_PCI, added by setup_efi_pci(), may advertise a ROM size
larger than early_memremap() is able to handle, which is currently
limited to 256kB. If this occurs it leads to a NULL dereference in
parse_setup_data().

To avoid this, remap the setup_data header and allow parsing functions
for individual types to handle their own data remapping.

Signed-off-by: Linn Crosetto <linn@hp.com>
Link: http://lkml.kernel.org/r/1376430401-67445-1-git-send-email-linn@hp.com
Acked-by: Yinghai Lu <yinghai@kernel.org>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
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