linux-kernel - [PATCH 3.19.y-ckt 227/251] ARM: 8371/1: always select IRQ

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Date:	Wed, 15 Jul 2015 18:09:08 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Arnd Bergmann <arnd@...db.de>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 227/251] ARM: 8371/1: always select IRQ_WORK on SMP

3.19.8-ckt4 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Arnd Bergmann <arnd@...db.de>

commit 0361748f3b4a1cd73657a0a44fc3bc71ea30e8eb upstream.

Any SMP kernel now requires the irq_work code after
generic_smp_call_function_single_interrupt() started using it,
or we get:

kernel/built-in.o: In function `flush_smp_call_function_queue':
:(.text+0x4dc3a): undefined reference to `irq_work_run'

Fixes: 478850160636c4f ("irq_work: Implement remote queueing")

Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 arch/arm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 97d07ed..6422c9b 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1318,6 +1318,7 @@ config SMP
 	depends on GENERIC_CLOCKEVENTS
 	depends on HAVE_SMP
 	depends on MMU || ARM_MPU
+	select IRQ_WORK
 	help
 	  This enables support for systems with more than one CPU. If you have
 	  a system with only one CPU, say N. If you have a system with more
-- 
1.9.1

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