From: Semen Protsenko <semen.protsenko@linaro.org>
Date: Fri, 15 Aug 2014 13:22:44 +0000 (+0300)
Subject: efi/arm64: Store Runtime Services revision
X-Git-Tag: firefly_0821_release~176^2~3341^2^2
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=6a7519e81321343165f89abb8b616df186d3e57a;p=firefly-linux-kernel-4.4.55.git

efi/arm64: Store Runtime Services revision

"efi" global data structure contains "runtime_version" field which must
be assigned in order to use it later in Runtime Services virtual calls
(virt_efi_* functions).

Before this patch "runtime_version" was unassigned (0), so each
Runtime Service virtual call that checks revision would fail.

Signed-off-by: Semen Protsenko <semen.protsenko@linaro.org>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
---

diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index e72f3100958f..5dbb7bd3b838 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -463,6 +463,8 @@ static int __init arm64_enter_virtual_mode(void)
 	efi_native_runtime_setup();
 	set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
 
+	efi.runtime_version = efi.systab->hdr.revision;
+
 	return 0;
 
 err_unmap: