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author | 2017-09-05 17:04:56 +0200 | |
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committer | 2017-10-19 23:49:03 +0200 | |
commit | 2f8a26c166eba01382765bc2fa575387e41079ac (patch) | |
tree | ef9e88c1e967145c037d249d207d3bc931be25ea /drivers/clocksource/Kconfig | |
parent | clocksource/drivers/rockchip: pr_err() strings should end with newlines (diff) | |
download | linux-2f8a26c166eba01382765bc2fa575387e41079ac.tar.gz linux-2f8a26c166eba01382765bc2fa575387e41079ac.tar.bz2 linux-2f8a26c166eba01382765bc2fa575387e41079ac.zip |
clocksource: Improve GENERIC_CLOCKEVENTS dependency
We regularly run into build errors when a clocksource driver selects
CONFIG_TIMER_OF while CONFIG_GENERIC_CLOCKEVENTS is disabled:
In file included from drivers/clocksource/timer-of.c:25:0:
drivers/clocksource/timer-of.h:35:28: error: field 'clkevt' has incomplete type
At the moment, three drivers can show this behavior: ARMV7M_SYSTICK,
CLKSRC_ST_LPC and CLKSRC_NPS. We could add further dependencies as we did
many times, but I have looked a little bit more at what architectures
are left that don't use GENERIC_CLOCKEVENTS, and this shows that there
is a better solution.
On arch/frv and arch/ia64, we never select CONFIG_GENERIC_CLOCKEVENTS
and we also don't use ARCH_USES_GETTIMEOFFSET, which would
block the clocksource Kconfig menu. On m68k, some platforms use
CONFIG_GENERIC_CLOCKEVENTS, some use ARCH_USES_GETTIMEOFFSET, and some
use neither of them. The good news is that there is no configuration that
does not set CONFIG_GENERIC_CLOCKEVENTS but that wants to enable any of
the Kconfig symbols in the menu, so we can simply replace the dependency
with the stricter one. While in theory one could have a clocksource
driver without the clockevent infrastructure, this seems unlikely
to be relevant in the future any more.
We can probably drop some of the other dependencies as well now,
e.g. there should generally be no reason to depend on CONFIG_ARM
unless the driver uses architecture specific assembly.
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Diffstat (limited to 'drivers/clocksource/Kconfig')
-rw-r--r-- | drivers/clocksource/Kconfig | 50 |
1 files changed, 9 insertions, 41 deletions
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index cc6062049170..c729a88007d0 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -1,9 +1,8 @@ menu "Clock Source drivers" - depends on !ARCH_USES_GETTIMEOFFSET + depends on GENERIC_CLOCKEVENTS config TIMER_OF bool - depends on GENERIC_CLOCKEVENTS select TIMER_PROBE config TIMER_ACPI @@ -30,21 +29,18 @@ config CLKSRC_MMIO config BCM2835_TIMER bool "BCM2835 timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables the support for the BCM2835 timer driver. config BCM_KONA_TIMER bool "BCM mobile timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables the support for the BCM Kona mobile timer driver. config DIGICOLOR_TIMER bool "Digicolor timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO depends on HAS_IOMEM help @@ -52,7 +48,6 @@ config DIGICOLOR_TIMER config DW_APB_TIMER bool "DW APB timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS help Enables the support for the dw_apb timer. @@ -63,7 +58,6 @@ config DW_APB_TIMER_OF config FTTMR010_TIMER bool "Faraday Technology timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM select CLKSRC_MMIO select TIMER_OF @@ -90,7 +84,6 @@ config ARMADA_370_XP_TIMER config MESON6_TIMER bool "Meson6 timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables the support for the Meson6 timer driver. @@ -105,14 +98,12 @@ config ORION_TIMER config OWL_TIMER bool "Owl timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables the support for the Actions Semi Owl timer driver. config SUN4I_TIMER bool "Sun4i timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM select CLKSRC_MMIO select TIMER_OF @@ -135,7 +126,6 @@ config TEGRA_TIMER config VT8500_TIMER bool "VT8500 timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM help Enables support for the VT8500 driver. @@ -148,7 +138,6 @@ config CADENCE_TTC_TIMER config ASM9260_TIMER bool "ASM9260 timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO select TIMER_OF help @@ -171,28 +160,24 @@ config CLKSRC_NOMADIK_MTU_SCHED_CLOCK config CLKSRC_DBX500_PRCMU bool "Clocksource PRCMU Timer" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM help Use the always on PRCMU Timer as clocksource config CLPS711X_TIMER bool "Cirrus logic timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables support for the Cirrus Logic PS711 timer. config ATLAS7_TIMER bool "Atlas7 timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables support for the Atlas7 timer. config MXS_TIMER bool "Mxs timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO select STMP_DEVICE help @@ -200,14 +185,12 @@ config MXS_TIMER config PRIMA2_TIMER bool "Prima2 timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables support for the Prima2 timer. config U300_TIMER bool "U300 timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on ARM select CLKSRC_MMIO help @@ -215,14 +198,12 @@ config U300_TIMER config NSPIRE_TIMER bool "NSpire timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables support for the Nspire timer. config KEYSTONE_TIMER bool "Keystone timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on ARM || ARM64 select CLKSRC_MMIO help @@ -230,7 +211,6 @@ config KEYSTONE_TIMER config INTEGRATOR_AP_TIMER bool "Integrator-ap timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables support for the Integrator-ap timer. @@ -253,7 +233,7 @@ config CLKSRC_EFM32 config CLKSRC_LPC32XX bool "Clocksource for LPC32XX" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS && HAS_IOMEM + depends on HAS_IOMEM depends on ARM select CLKSRC_MMIO select TIMER_OF @@ -262,7 +242,7 @@ config CLKSRC_LPC32XX config CLKSRC_PISTACHIO bool "Clocksource for Pistachio SoC" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS && HAS_IOMEM + depends on HAS_IOMEM select TIMER_OF help Enables the clocksource for the Pistachio SoC. @@ -298,7 +278,6 @@ config CLKSRC_MPS2 config ARC_TIMERS bool "Support for 32-bit TIMERn counters in ARC Cores" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select TIMER_OF help These are legacy 32-bit TIMER0 and TIMER1 counters found on all ARC cores @@ -307,7 +286,6 @@ config ARC_TIMERS config ARC_TIMERS_64BIT bool "Support for 64-bit counters in ARC HS38 cores" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on ARC_TIMERS select TIMER_OF help @@ -407,7 +385,6 @@ config ATMEL_PIT config ATMEL_ST bool "Atmel ST timer support" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select TIMER_OF select MFD_SYSCON help @@ -426,7 +403,6 @@ config CLKSRC_EXYNOS_MCT config CLKSRC_SAMSUNG_PWM bool "PWM timer driver for Samsung S3C, S5P" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM help This is a new clocksource driver for the PWM timer found in @@ -436,7 +412,6 @@ config CLKSRC_SAMSUNG_PWM config FSL_FTM_TIMER bool "Freescale FlexTimer Module driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM select CLKSRC_MMIO help @@ -450,7 +425,6 @@ config VF_PIT_TIMER config OXNAS_RPS_TIMER bool "Oxford Semiconductor OXNAS RPS Timers driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select TIMER_OF select CLKSRC_MMIO help @@ -461,7 +435,7 @@ config SYS_SUPPORTS_SH_CMT config MTK_TIMER bool "Mediatek timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS && HAS_IOMEM + depends on HAS_IOMEM select TIMER_OF select CLKSRC_MMIO help @@ -479,7 +453,6 @@ config SYS_SUPPORTS_EM_STI config CLKSRC_JCORE_PIT bool "J-Core PIT timer driver" if COMPILE_TEST depends on OF - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM select CLKSRC_MMIO help @@ -488,7 +461,6 @@ config CLKSRC_JCORE_PIT config SH_TIMER_CMT bool "Renesas CMT timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM default SYS_SUPPORTS_SH_CMT help @@ -498,7 +470,6 @@ config SH_TIMER_CMT config SH_TIMER_MTU2 bool "Renesas MTU2 timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM default SYS_SUPPORTS_SH_MTU2 help @@ -508,14 +479,12 @@ config SH_TIMER_MTU2 config RENESAS_OSTM bool "Renesas OSTM timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS select CLKSRC_MMIO help Enables the support for the Renesas OSTM. config SH_TIMER_TMU bool "Renesas TMU timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM default SYS_SUPPORTS_SH_TMU help @@ -525,7 +494,7 @@ config SH_TIMER_TMU config EM_TIMER_STI bool "Renesas STI timer driver" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS && HAS_IOMEM + depends on HAS_IOMEM default SYS_SUPPORTS_EM_STI help This enables build of a clocksource and clockevent driver for @@ -566,7 +535,6 @@ config CLKSRC_TANGO_XTAL config CLKSRC_PXA bool "Clocksource for PXA or SA-11x0 platform" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS depends on HAS_IOMEM select CLKSRC_MMIO help @@ -575,20 +543,20 @@ config CLKSRC_PXA config H8300_TMR8 bool "Clockevent timer for the H8300 platform" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS && HAS_IOMEM + depends on HAS_IOMEM help This enables the 8 bits timer for the H8300 platform. config H8300_TMR16 bool "Clockevent timer for the H83069 platform" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS && HAS_IOMEM + depends on HAS_IOMEM help This enables the 16 bits timer for the H8300 platform with the H83069 cpu. config H8300_TPU bool "Clocksource for the H8300 platform" if COMPILE_TEST - depends on GENERIC_CLOCKEVENTS && HAS_IOMEM + depends on HAS_IOMEM help This enables the clocksource for the H8300 platform with the H8S2678 cpu. @@ -600,7 +568,7 @@ config CLKSRC_IMX_GPT config CLKSRC_IMX_TPM bool "Clocksource using i.MX TPM" if COMPILE_TEST - depends on ARM && CLKDEV_LOOKUP && GENERIC_CLOCKEVENTS + depends on ARM && CLKDEV_LOOKUP select CLKSRC_MMIO help Enable this option to use IMX Timer/PWM Module (TPM) timer as |