[3.8.y.z extended stable] Patch "x86, efi: Don't use (U)EFI time services on 32 bit" has been added to staging queue

[Kamal Mostafa]

This is a note to let you know that I have just added a patch titled

    x86, efi: Don't use (U)EFI time services on 32 bit

to the linux-3.8.y-queue branch of the 3.8.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.8.y-queue

This patch is scheduled to be released in version 3.8.13.16.

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.8.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Kamal

------

>From db57e28856b20590cd25a7347acea5f9a79e9b8c Mon Sep 17 00:00:00 2001
From: Matthew Garrett <matthew.garrett at nebula.com>
Date: Fri, 29 Nov 2013 14:44:43 -0500
Subject: x86, efi: Don't use (U)EFI time services on 32 bit

commit 04bf9ba720fcc4fa313fa122b799ae0989b6cd50 upstream.

UEFI time services are often broken once we're in virtual mode. We were
already refusing to use them on 64-bit systems, but it turns out that
they're also broken on some 32-bit firmware, including the Dell Venue.
Disable them for now, we can revisit once we have the 1:1 mappings code
incorporated.

Signed-off-by: Matthew Garrett <matthew.garrett at nebula.com>
Link: http://lkml.kernel.org/r/1385754283-2464-1-git-send-email-matthew.garrett@nebula.com
Cc: Matt Fleming <matt.fleming at intel.com>
Signed-off-by: H. Peter Anvin <hpa at linux.intel.com>
Signed-off-by: Kamal Mostafa <kamal at canonical.com>
---
 arch/x86/platform/efi/efi.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/arch/x86/platform/efi/efi.c b/arch/x86/platform/efi/efi.c
index cc657c8..2a5d329 100644
--- a/arch/x86/platform/efi/efi.c
+++ b/arch/x86/platform/efi/efi.c
@@ -756,13 +756,6 @@ void __init efi_init(void)

 	set_bit(EFI_MEMMAP, &x86_efi_facility);

-#ifdef CONFIG_X86_32
-	if (efi_is_native()) {
-		x86_platform.get_wallclock = efi_get_time;
-		x86_platform.set_wallclock = efi_set_rtc_mmss;
-	}
-#endif
-
 #if EFI_DEBUG
 	print_efi_memmap();
 #endif
--
1.8.3.2