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 e72f3100958f204ce5b72ba2ce788e2e6cdc3d95..5dbb7bd3b838201f306845f24155bde5f445bc4a 100644 (file)
--- 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: