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Commit 301681d6 authored by Yuriy Kolerov's avatar Yuriy Kolerov Committed by Greg Kroah-Hartman
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ARCv2: IRQ: Call entry/exit functions for chained handlers in MCIP 




[ Upstream commit e51d5d02f688c45b6f644f472f0c80fdfa73f0cb ]

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

arch/arc/kernel/mcip.c

+4 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 


#include <linux/smp.h>

#include <linux/irq.h>

#include <linux/irqchip/chained_irq.h>

#include <linux/spinlock.h>

#include <asm/irqflags-arcv2.h>

#include <asm/mcip.h>
@@ -221,10 +222,13 @@ static irq_hw_number_t idu_first_hwirq; 
static void idu_cascade_isr(struct irq_desc *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 idu_hwirq = core_hwirq - idu_first_hwirq;



	chained_irq_enter(core_chip, desc);

	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)