• Jiri Slaby's avatar
    build some drivers only when compile-testing · 4bb16672
    Jiri Slaby authored
    Some drivers can be built on more platforms than they run on. This is
    a burden for users and distributors who package a kernel. They have to
    manually deselect some (for them useless) drivers when updating their
    configs via oldconfig. And yet, sometimes it is even impossible to
    disable the drivers without patching the kernel.
    
    Introduce a new config option COMPILE_TEST and make all those drivers
    to depend on the platform they run on, or on the COMPILE_TEST option.
    Now, when users/distributors choose COMPILE_TEST=n they will not have
    the drivers in their allmodconfig setups, but developers still can
    compile-test them with COMPILE_TEST=y.
    
    Now the drivers where we use this new option:
    * PTP_1588_CLOCK_PCH: The PCH EG20T is only compatible with Intel Atom
      processors so it should depend on x86.
    * FB_GEODE: Geode is 32-bit only so only enable it for X86_32.
    * USB_CHIPIDEA_IMX: The OF_DEVICE dependency will be met on powerpc
      systems -- which do not actually support the hardware via that
      method.
    * INTEL_MID_PTI: It is specific to the Penwell type of Intel Atom
      device.
    
    [v2]
    * remove EXPERT dependency
    
    [gregkh - remove chipidea portion, as it's incorrect, and also doesn't
     apply to my driver-core tree]
    Signed-off-by: default avatarJiri Slaby <jslaby@suse.cz>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Linus Torvalds <torvalds@linux-foundation.org>
    Cc: Jeff Mahoney <jeffm@suse.com>
    Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
    Cc: linux-usb@vger.kernel.org
    Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
    Cc: linux-geode@lists.infradead.org
    Cc: linux-fbdev@vger.kernel.org
    Cc: Richard Cochran <richardcochran@gmail.com>
    Cc: netdev@vger.kernel.org
    Cc: Ben Hutchings <ben@decadent.org.uk>
    Cc: "Keller, Jacob E" <jacob.e.keller@intel.com>
    Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
    4bb16672
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