linux-kernel - [PATCH] clocksource: make ARM_TIMER_SP804 depend on GENERIC_SCHED

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Date:	Fri, 29 May 2015 09:17:56 +0100
From:	Sudeep Holla <sudeep.holla@....com>
To:	linux-kernel@...r.kernel.org,
	Russell King <linux@....linux.org.uk>,
	linux-arm-kernel@...ts.infradead.org
Cc:	Sudeep Holla <sudeep.holla@....com>, linux-next@...r.kernel.org,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: [PATCH] clocksource: make ARM_TIMER_SP804 depend on GENERIC_SCHED_CLOCK

Commit 5261ef2ea836 ("ARM: 8366/1: move Dual-Timer SP804 driver to
drivers/clocksource") moved SP804 to drivers/clocksource resulting in
it being selectable on platforms/architectures without the config
GENERIC_SCHED_CLOCK enabled. Due to that, it results in the following
build failure(e.g. x86_64 allmodconfig)

drivers/built-in.o: In function `__sp804_clocksource_and_sched_clock_init':
(.init.text+0x1a0e7): undefined reference to `sched_clock_register'

This patch fixes the build by making ARM_TIMER_SP804 depend on
GENERIC_SCHED_CLOCK

Cc: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Russell King <linux@....linux.org.uk>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Sudeep Holla <sudeep.holla@....com>
---
 drivers/clocksource/Kconfig | 1 +
 1 file changed, 1 insertion(+)

Hi Russell,

If you are fine with this fix, I will put this into the patch tracker.

Regards,
Sudeep

diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig
index 0f1c0e7f86da..50534704486a 100644
--- a/drivers/clocksource/Kconfig
+++ b/drivers/clocksource/Kconfig
@@ -134,6 +134,7 @@ config ARM_GLOBAL_TIMER

 config ARM_TIMER_SP804
 	bool "Support for Dual Timer SP804 module"
+	depends on GENERIC_SCHED_CLOCK
 	select CLKSRC_MMIO
 	select CLKSRC_OF if OF

--
1.9.1

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