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Commit 4bb16672 authored by Jiri Slaby's avatar Jiri Slaby Committed by Greg Kroah-Hartman
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build some drivers only when compile-testing 



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>
parent b5aef682

drivers/misc/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -135,7 +135,7 @@ config PHANTOM 


config INTEL_MID_PTI

	tristate "Parallel Trace Interface for MIPI P1149.7 cJTAG standard"

	depends on PCI && TTY

	depends on PCI && TTY && (X86_INTEL_MID || COMPILE_TEST)

	default n

	help

	  The PTI (Parallel Trace Interface) driver directs

drivers/ptp/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -72,6 +72,7 @@ config DP83640_PHY 


config PTP_1588_CLOCK_PCH

	tristate "Intel PCH EG20T as PTP clock"

	depends on X86 || COMPILE_TEST

	select PTP_1588_CLOCK

	help

	  This driver adds support for using the PCH EG20T as a PTP

drivers/video/geode/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 
#

config FB_GEODE

	bool "AMD Geode family framebuffer support"

	depends on FB && PCI && X86

	depends on FB && PCI && (X86_32 || (X86 && COMPILE_TEST))

	---help---

	  Say 'Y' here to allow you to select framebuffer drivers for

	  the AMD Geode family of processors.

init/Kconfig

+14 −0
Original line number Diff line number Diff line
@@ -53,6 +53,20 @@ config CROSS_COMPILE 
	  need to set this unless you want the configured kernel build

	  directory to select the cross-compiler automatically.



config COMPILE_TEST

	bool "Compile also drivers which will not load"

	default n

	help

	  Some drivers can be compiled on a different platform than they are

	  intended to be run on. Despite they cannot be loaded there (or even

	  when they load they cannot be used due to missing HW support),

	  developers still, opposing to distributors, might want to build such

	  drivers to compile-test them.



	  If you are a developer and want to build everything available, say Y

	  here. If you are a user/distributor, say N here to exclude useless

	  drivers to be distributed.



config LOCALVERSION

	string "Local version - append to kernel release"

	help