• Ard Biesheuvel's avatar
    ACPI / button: make module loadable when booted in non-ACPI mode · ac1e55b1
    Ard Biesheuvel authored
    Modules such as nouveau.ko and i915.ko have a link time dependency on
    acpi_lid_open(), and due to its use of acpi_bus_register_driver(),
    the button.ko module that provides it is only loadable when booted in
    ACPI mode. However, the ACPI button driver can be built into the core
    kernel as well, in which case the dependency can always be satisfied,
    and the dependent modules can be loaded regardless of whether the
    system was booted in ACPI mode or not.
    
    So let's fix this asymmetry by making the ACPI button driver loadable
    as a module even if not booted in ACPI mode, so it can provide the
    acpi_lid_open() symbol in the same way as when built into the kernel.
    Signed-off-by: default avatarArd Biesheuvel <ard.biesheuvel@linaro.org>
    [ rjw: Minor adjustments of comments, whitespace and names. ]
    Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
    ac1e55b1
button.c 18 KB