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Commit f6da9fe4 authored by Linus Walleij's avatar Linus Walleij Committed by Thomas Gleixner
Browse files

irqchip: vic: Properly chain the cascaded IRQs 



We are flagging the parent IRQ as chained, then we must also
make sure to call the chained_irq_[enter|exit] functions for
things to work smoothly.

Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: http://lkml.kernel.org/r/1397550484-7119-1-git-send-email-linus.walleij@linaro.org


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 55101e2d

drivers/irqchip/irq-vic.c

+6 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#include <linux/list.h>

#include <linux/io.h>

#include <linux/irq.h>

#include <linux/irqchip/chained_irq.h>

#include <linux/irqdomain.h>

#include <linux/of.h>

#include <linux/of_address.h>
@@ -228,12 +229,17 @@ static int handle_one_vic(struct vic_device *vic, struct pt_regs *regs) 
static void vic_handle_irq_cascaded(unsigned int irq, struct irq_desc *desc)

{

	u32 stat, hwirq;

	struct irq_chip *host_chip = irq_desc_get_chip(desc);

	struct vic_device *vic = irq_desc_get_handler_data(desc);



	chained_irq_enter(host_chip, desc);



	while ((stat = readl_relaxed(vic->base + VIC_IRQ_STATUS))) {

		hwirq = ffs(stat) - 1;

		generic_handle_irq(irq_find_mapping(vic->domain, hwirq));

	}



	chained_irq_exit(host_chip, desc);

}



/*