[01/11] efi/arm64: Store Runtime Services revision

Message ID 1413821951-29461-2-git-send-email-ard.biesheuvel@linaro.org
State New
Headers show

Commit Message

Ard Biesheuvel Oct. 20, 2014, 4:19 p.m.
From: Semen Protsenko <semen.protsenko@linaro.org>

"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>
---
 arch/arm64/kernel/efi.c | 2 ++
 1 file changed, 2 insertions(+)

Patch

diff --git a/arch/arm64/kernel/efi.c b/arch/arm64/kernel/efi.c
index 865fdf5c7344..219a59f2ae97 100644
--- a/arch/arm64/kernel/efi.c
+++ b/arch/arm64/kernel/efi.c
@@ -455,6 +455,8 @@  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: