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 read Kconfig help texts and 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 really run on, or on the COMPILE_TEST option. Now, when users/distributors choose COMPILE_TEST=n they will not have the drivers in their oldconfig output, 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. * INTEL_MID_PTI: It is specific to the Penwell type of Intel Atom device. [v2] * remove EXPERT dependency [v3] * do not touch IMX Signed-off-by: Jiri Slaby <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Jeff Mahoney <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Florian Tobias Schandinat <[email protected]> Cc: [email protected] Cc: [email protected] Cc: Richard Cochran <[email protected]> Cc: [email protected] Cc: Ben Hutchings <[email protected]> Cc: "Keller, Jacob E" <[email protected]> --- drivers/misc/Kconfig | 2 +- drivers/ptp/Kconfig | 1 + drivers/video/geode/Kconfig | 2 +- init/Kconfig | 14 ++++++++++++++ 4 files changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig index 80889d5..8dacd4c 100644 --- a/drivers/misc/Kconfig +++ b/drivers/misc/Kconfig @@ -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 diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig index 1ea6f1d..5be73ba 100644 --- a/drivers/ptp/Kconfig +++ b/drivers/ptp/Kconfig @@ -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 diff --git a/drivers/video/geode/Kconfig b/drivers/video/geode/Kconfig index 21e351a..1e85552 100644 --- a/drivers/video/geode/Kconfig +++ b/drivers/video/geode/Kconfig @@ -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. diff --git a/init/Kconfig b/init/Kconfig index ce540ef..54d3fa5 100644 --- a/init/Kconfig +++ b/init/Kconfig @@ -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 -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
