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authorYuriy Kolerov <yuriy.kolerov@synopsys.com>2016-12-28 11:46:25 +0300
committerVineet Gupta <vgupta@synopsys.com>2017-01-04 17:12:11 -0800
commite51d5d02f688c45b6f644f472f0c80fdfa73f0cb (patch)
tree4ff0f5721087e037bcee3b8373b74dec2e40eacd
parent2163266c2704aa44211b6b61924a0fa570fe0d4b (diff)
downloadlinux-e51d5d02f688c45b6f644f472f0c80fdfa73f0cb.tar.bz2
ARCv2: IRQ: Call entry/exit functions for chained handlers in MCIP
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>
-rw-r--r--arch/arc/kernel/mcip.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/arc/kernel/mcip.c b/arch/arc/kernel/mcip.c
index 560c4afc2af4..9274f8ade8c7 100644
--- a/arch/arc/kernel/mcip.c
+++ b/arch/arc/kernel/mcip.c
@@ -10,6 +10,7 @@
#include <linux/smp.h>
#include <linux/irq.h>
+#include <linux/irqchip/chained_irq.h>
#include <linux/spinlock.h>
#include <soc/arc/mcip.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)
{
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)