releases/3.4.75/x86-efi-don-t-use-u-efi-time-services-on-32-bit.patch

   1 From 04bf9ba720fcc4fa313fa122b799ae0989b6cd50 Mon Sep 17 00:00:00 2001
   2 From: Matthew Garrett <matthew.garrett@nebula.com>
   3 Date: Fri, 29 Nov 2013 14:44:43 -0500
   4 Subject: x86, efi: Don't use (U)EFI time services on 32 bit
   5
   6 From: Matthew Garrett <matthew.garrett@nebula.com>
   7
   8 commit 04bf9ba720fcc4fa313fa122b799ae0989b6cd50 upstream.
   9
  10 UEFI time services are often broken once we're in virtual mode. We were
  11 already refusing to use them on 64-bit systems, but it turns out that
  12 they're also broken on some 32-bit firmware, including the Dell Venue.
  13 Disable them for now, we can revisit once we have the 1:1 mappings code
  14 incorporated.
  15
  16 Signed-off-by: Matthew Garrett <matthew.garrett@nebula.com>
  17 Link: http://lkml.kernel.org/r/1385754283-2464-1-git-send-email-matthew.garrett@nebula.com
  18 Cc: Matt Fleming <matt.fleming@intel.com>
  19 Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
  20 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  21
  22 ---
  23  arch/x86/platform/efi/efi.c |    7 -------
  24  1 file changed, 7 deletions(-)
  25
  26 --- a/arch/x86/platform/efi/efi.c
  27 +++ b/arch/x86/platform/efi/efi.c
  28 @@ -744,13 +744,6 @@ void __init efi_init(void)
  29
  30         set_bit(EFI_MEMMAP, &x86_efi_facility);
  31
  32 -#ifdef CONFIG_X86_32
  33 -       if (efi_is_native()) {
  34 -               x86_platform.get_wallclock = efi_get_time;
  35 -               x86_platform.set_wallclock = efi_set_rtc_mmss;
  36 -       }
  37 -#endif
  38 -
  39  #if EFI_DEBUG
  40         print_efi_memmap();
  41  #endif