tree 37348e15c237d88ed2accce23e3372585eac4969
parent 51f8fbba64e58ee611c58f15a00b7611e13a0460
author Josh Boyer <jwboyer@redhat.com> 1366816612 -0400
committer Matt Fleming <matt.fleming@intel.com> 1366816741 +0100

efi: Check EFI revision in setup_efi_vars

We need to check the runtime sys_table for the EFI version the firmware
specifies instead of just checking for a NULL QueryVariableInfo.  Older
implementations of EFI don't have QueryVariableInfo but the runtime is
a smaller structure, so the pointer to it may be pointing off into garbage.

This is apparently the case with several Apple firmwares that support EFI
1.10, and the current check causes them to no longer boot.  Fix based on
a suggestion from Matthew Garrett.

Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>