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    Subject[PATCH 3.8 041/166] x86, efi: Don't use (U)EFI time services on 32 bit
    Date
    3.8.13.16 -stable review patch.  If anyone has any objections, please let me know.

    ------------------

    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


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