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    Subject[PATCH] x86: fix section mismatch warning in acpi/boot.c
    Date
    Fix following warning:
    WARNING: o-x86_64/arch/x86/kernel/built-in.o(.text+0x13d15): Section mismatch in reference from the function acpi_map_lsapic() to the function .cpuinit.text:mp_register_lapic()

    The function acpi_map_lsapic() is exported and thus not annotated.
    But the sole user is acpi/processor_core.c in a __cpuinit path.
    So create a small wrapper and put back the annotation thus
    avoiding the warning.

    Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
    ---
    arch/x86/kernel/acpi/boot.c | 8 +++++++-
    1 files changed, 7 insertions(+), 1 deletions(-)

    diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
    index 0ca27c7..d2a5843 100644
    --- a/arch/x86/kernel/acpi/boot.c
    +++ b/arch/x86/kernel/acpi/boot.c
    @@ -496,7 +496,8 @@ EXPORT_SYMBOL(acpi_register_gsi);
    * ACPI based hotplug support for CPU
    */
    #ifdef CONFIG_ACPI_HOTPLUG_CPU
    -int acpi_map_lsapic(acpi_handle handle, int *pcpu)
    +
    +static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu)
    {
    struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
    union acpi_object *obj;
    @@ -551,6 +552,11 @@ int acpi_map_lsapic(acpi_handle handle, int *pcpu)
    return 0;
    }

    +/* wrapper to silence section mismatch warning */
    +int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu)
    +{
    + return _acpi_map_lsapic(handle, pcpu);
    +}
    EXPORT_SYMBOL(acpi_map_lsapic);

    int acpi_unmap_lsapic(int cpu)
    --
    1.5.4.rc3.14.g44397


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