From: Yuriy Kolerov <yuriy.kolerov@synopsys.com>
To: linux-snps-arc@lists.infradead.org
Cc: Vineet.Gupta1@synopsys.com, Alexey.Brodkin@synopsys.com,
linux-kernel@vger.kernel.org, marc.zyngier@arm.com,
Yuriy Kolerov <yuriy.kolerov@synopsys.com>
Subject: [PATCH v3 2/3] ARCv2: IRQ: Call entry/exit functions for chained handlers in MCIP
Date: Wed, 28 Dec 2016 11:46:25 +0300 [thread overview]
Message-ID: <1482914786-10490-3-git-send-email-yuriy.kolerov@synopsys.com> (raw)
In-Reply-To: <1482914786-10490-1-git-send-email-yuriy.kolerov@synopsys.com>
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>
---
arch/arc/kernel/mcip.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arc/kernel/mcip.c b/arch/arc/kernel/mcip.c
index f39142a..be131b2 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 <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)
--
2.7.4
next prev parent reply other threads:[~2016-12-28 8:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-28 8:46 [PATCH v3 0/3] Fixes for IRQ subsystem Yuriy Kolerov
2016-12-28 8:46 ` [PATCH v3 1/3] ARC: IRQ: Use hwirq instead of virq in mask/unmask Yuriy Kolerov
2017-01-03 18:20 ` Vineet Gupta
2016-12-28 8:46 ` Yuriy Kolerov [this message]
2017-01-03 18:21 ` [PATCH v3 2/3] ARCv2: IRQ: Call entry/exit functions for chained handlers in MCIP Vineet Gupta
2016-12-28 8:46 ` [PATCH v3 3/3] ARCv2: MCIP: Deprecate setting of affinity in Device Tree Yuriy Kolerov
2017-01-03 18:10 ` Vineet Gupta
2017-01-23 12:21 ` Yuriy Kolerov
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