Currently, we step into drivers/hid/ based on the value of CONFIG_HID.
However, that value is a tristate, meaning that it can be a module.
As per the documentation, if we jump into the subdirectory by following an obj-m, we can not compile anything inside that subdirectory in vmlinux. It is considered as a bug.
To make things more friendly to HID-BPF, split HID (the HID core parameter) from HID_SUPPORT (do we want any kind of HID support in the system?), and make this new config a boolean.
Reviewed-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Benjamin Tissoires benjamin.tissoires@redhat.com
---
no changes in v10
no changes in v9
no changes in v8
new in v7 --- drivers/Makefile | 2 +- drivers/hid/Kconfig | 20 +++++++++++--------- 2 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/drivers/Makefile b/drivers/Makefile index 057857258bfd..a24e6be80764 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -137,7 +137,7 @@ obj-$(CONFIG_CRYPTO) += crypto/ obj-$(CONFIG_SUPERH) += sh/ obj-y += clocksource/ obj-$(CONFIG_DCA) += dca/ -obj-$(CONFIG_HID) += hid/ +obj-$(CONFIG_HID_SUPPORT) += hid/ obj-$(CONFIG_PPC_PS3) += ps3/ obj-$(CONFIG_OF) += of/ obj-$(CONFIG_SSB) += ssb/ diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig index 6ce92830b5d1..4f24e42372dc 100644 --- a/drivers/hid/Kconfig +++ b/drivers/hid/Kconfig @@ -2,12 +2,18 @@ # # HID driver configuration # -menu "HID support" - depends on INPUT +menuconfig HID_SUPPORT + bool "HID bus support" + default y + depends on INPUT + help + This option adds core support for human interface device (HID). + You will also need drivers from the following menu to make use of it. + +if HID_SUPPORT
config HID - tristate "HID bus support" - depends on INPUT + tristate "HID bus core support" default y help A human interface device (HID) is a type of computer device that @@ -24,8 +30,6 @@ config HID
If unsure, say Y.
-if HID - config HID_BATTERY_STRENGTH bool "Battery level reporting for HID devices" depends on HID @@ -1324,8 +1328,6 @@ config HID_KUNIT_TEST
endmenu
-endif # HID - source "drivers/hid/usbhid/Kconfig"
source "drivers/hid/i2c-hid/Kconfig" @@ -1336,4 +1338,4 @@ source "drivers/hid/amd-sfh-hid/Kconfig"
source "drivers/hid/surface-hid/Kconfig"
-endmenu +endif # HID_SUPPORT