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ARCv2: IRQ: Call entry/exit functions for chained handlers in MCIP

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It is necessary to call entry/exit functions for parent interrupt
controllers for proper masking/unmasking of interrupt lines.

Signed-off-by: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
This commit is contained in:
Yuriy Kolerov 2016-12-28 11:46:25 +03:00 • committed by Vineet Gupta
parent 2163266c27
commit e51d5d02f6
1 changed files with 4 additions and 0 deletions
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4
arch/arc/kernel/mcip.c
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@ -10,6 +10,7 @@
#include <linux/smp.h> #include <linux/smp.h>
#include <linux/irq.h> #include <linux/irq.h>
#include <linux/irqchip/chained_irq.h>
#include <linux/spinlock.h> #include <linux/spinlock.h>
#include <soc/arc/mcip.h> #include <soc/arc/mcip.h>
#include <asm/irqflags-arcv2.h> #include <asm/irqflags-arcv2.h>
@ -221,10 +222,13 @@ static irq_hw_number_t idu_first_hwirq;
static void idu_cascade_isr(struct irq_desc *desc) static void idu_cascade_isr(struct irq_desc *desc)
{ {
struct irq_domain *idu_domain = irq_desc_get_handler_data(desc); struct irq_domain *idu_domain = irq_desc_get_handler_data(desc);
struct irq_chip *core_chip = irq_desc_get_chip(desc);
irq_hw_number_t core_hwirq = irqd_to_hwirq(irq_desc_get_irq_data(desc)); irq_hw_number_t core_hwirq = irqd_to_hwirq(irq_desc_get_irq_data(desc));
irq_hw_number_t idu_hwirq = core_hwirq - idu_first_hwirq; irq_hw_number_t idu_hwirq = core_hwirq - idu_first_hwirq;
chained_irq_enter(core_chip, desc);
generic_handle_irq(irq_find_mapping(idu_domain, idu_hwirq)); generic_handle_irq(irq_find_mapping(idu_domain, idu_hwirq));
chained_irq_exit(core_chip, desc);
} }
static int idu_irq_map(struct irq_domain *d, unsigned int virq, irq_hw_number_t hwirq) static int idu_irq_map(struct irq_domain *d, unsigned int virq, irq_hw_number_t hwirq)