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authorArnd Bergmann <arnd@arndb.de>2014-04-23 14:49:17 +0200
committerThomas Gleixner <tglx@linutronix.de>2014-05-07 00:42:09 +0200
commit4c88d7f9b0d5fb0588c3386be62115cc2eaa8f9f (patch)
treeda0bb70da44dee630845a336eda76262f47f2fbb /include
parent0384dcae2b18db80c49117ac57ea15211ca48751 (diff)
downloadlinux-4c88d7f9b0d5fb0588c3386be62115cc2eaa8f9f.tar.bz2
genirq: Provide irq_force_affinity fallback for non-SMP
Patch 01f8fa4f01d "genirq: Allow forcing cpu affinity of interrupts" added an irq_force_affinity() function, and 30ccf03b4a6 "clocksource: Exynos_mct: Use irq_force_affinity() in cpu bringup" subsequently uses it. However, the driver can be used with CONFIG_SMP disabled, but the function declaration is only available for CONFIG_SMP, leading to this build error: drivers/clocksource/exynos_mct.c:431:3: error: implicit declaration of function 'irq_force_affinity' [-Werror=implicit-function-declaration] irq_force_affinity(mct_irqs[MCT_L0_IRQ + cpu], cpumask_of(cpu)); This patch introduces a dummy helper function for the non-SMP case that always returns success, to get rid of the build error. Since the patches causing the problem are marked for stable backports, this one should be as well. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Krzysztof Kozlowski <k.kozlowski@samsung.com> Acked-by: Kukjin Kim <kgene.kim@samsung.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/5619084.0zmrrIUZLV@wuerfel Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
-rw-r--r--include/linux/interrupt.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 97ac926c78a7..051c85032f48 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -272,6 +272,11 @@ static inline int irq_set_affinity(unsigned int irq, const struct cpumask *m)
return -EINVAL;
}
+static inline int irq_force_affinity(unsigned int irq, const struct cpumask *cpumask)
+{
+ return 0;
+}
+
static inline int irq_can_set_affinity(unsigned int irq)
{
return 0;