[PATCH 3.8 041/166] x86, efi: Don't use (U)EFI time services on 32 bit

Kamal Mostafa
2014-01-15T21:50:55Z

From: Matthew Garrett <matthew.garrett@nebula.com>

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@nebula.com>
Link: http://lkml.kernel.org/r/1385754283-2464-1-git-send-email-matthew.garrett@nebula.com
Cc: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Signed-off-by: Kamal Mostafa <kamal@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