[PATCH 02/10] irqchip: irq-armada-370-xp: do the set_smp_cross_call() in the driver

Thomas Petazzoni
2014-03-28T13:06:58Z

Instead of having the SoC code in arch/arm/mach-mvebu/platsmp.c do the
set_smp_cross_call() to register the IPI-triggering function, it makes
more sense to do exactly what the GIC driver is doing: let the irqchip
driver do it. This way, it avoids having to expose the
armada_mpic_send_doorbell() function between the irqchip driver and
the SoC code.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
arch/arm/mach-mvebu/armada-370-xp.h | 1 -
arch/arm/mach-mvebu/platsmp.c | 2 --
drivers/irqchip/irq-armada-370-xp.c | 6 +++++-
3 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/arm/mach-mvebu/armada-370-xp.h b/arch/arm/mach-mvebu/armada-370-xp.h
index 991ab32..dd3b8a1 100644
--- a/arch/arm/mach-mvebu/armada-370-xp.h
+++ b/arch/arm/mach-mvebu/armada-370-xp.h
@@ -21,7 +21,6 @@
#define ARMADA_370_MAX_CPUS 1
#define ARMADA_XP_MAX_CPUS 4

-void armada_mpic_send_doorbell(const struct cpumask *mask, unsigned int irq);
void armada_xp_mpic_smp_cpu_init(void);
void armada_xp_secondary_startup(void);
extern struct smp_operations armada_xp_smp_ops;
diff --git a/arch/arm/mach-mvebu/platsmp.c b/arch/arm/mach-mvebu/platsmp.c
index e98075f..81bf517 100644
--- a/arch/arm/mach-mvebu/platsmp.c
+++ b/arch/arm/mach-mvebu/platsmp.c
@@ -98,8 +98,6 @@ static void __init armada_xp_smp_init_cpus(void)

if (ncores == 0 || ncores > ARMADA_XP_MAX_CPUS)
panic("Invalid number of CPUs in DT\n");
-
- set_smp_cross_call(armada_mpic_send_doorbell);
}

static void __init armada_xp_smp_prepare_cpus(unsigned int max_cpus)
diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c
index abb850b..0bf5aef 100644
--- a/drivers/irqchip/irq-armada-370-xp.c
+++ b/drivers/irqchip/irq-armada-370-xp.c
@@ -315,7 +315,8 @@ static int armada_370_xp_mpic_irq_map(struct irq_domain *h,
}

#ifdef CONFIG_SMP
-void armada_mpic_send_doorbell(const struct cpumask *mask, unsigned int irq)
+static void armada_mpic_send_doorbell(const struct cpumask *mask,
+ unsigned int irq)
{
int cpu;
unsigned long map = 0;
@@ -534,6 +535,9 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node,
if (parent_irq <= 0) {
irq_set_default_host(armada_370_xp_mpic_domain);
set_handle_irq(armada_370_xp_handle_irq);
+#ifdef CONFIG_SMP
+ set_smp_cross_call(armada_mpic_send_doorbell);
+#endif
} else {
irq_set_chained_handler(parent_irq,
armada_370_xp_mpic_handle_cascade_irq);
--
1.8.3.2