Commit 301681d6 authored by Yuriy Kolerov's avatar Yuriy Kolerov Committed by Greg Kroah-Hartman

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


[ Upstream commit e51d5d02 ]

It is necessary to call entry/exit functions for parent interrupt
controllers for proper masking/unmasking of interrupt lines.
Signed-off-by: default avatarYuriy Kolerov <yuriy.kolerov@synopsys.com>
Signed-off-by: default avatarVineet Gupta <vgupta@synopsys.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f10e2065
...@@ -10,6 +10,7 @@ ...@@ -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 <asm/irqflags-arcv2.h> #include <asm/irqflags-arcv2.h>
#include <asm/mcip.h> #include <asm/mcip.h>
...@@ -221,10 +222,13 @@ static irq_hw_number_t idu_first_hwirq; ...@@ -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)
......
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