summaryrefslogtreecommitdiffstats
path: root/drivers/irqchip/irq-vic.c
diff options
context:
space:
mode:
authorLinus Walleij <linus.walleij@linaro.org>2014-04-15 10:28:04 +0200
committerThomas Gleixner <tglx@linutronix.de>2014-04-15 18:24:24 +0200
commitf6da9fe45c3074b909084ae9da5f55034ebffeb4 (patch)
treec685c591ed6bb202da2b8fd204ee53a0630b652c /drivers/irqchip/irq-vic.c
parent55101e2d6ce1c780f6ee8fee5f37306971aac6cd (diff)
downloadblackbird-op-linux-f6da9fe45c3074b909084ae9da5f55034ebffeb4.tar.gz
blackbird-op-linux-f6da9fe45c3074b909084ae9da5f55034ebffeb4.zip
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: Linus Walleij <linus.walleij@linaro.org> Link: http://lkml.kernel.org/r/1397550484-7119-1-git-send-email-linus.walleij@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/irqchip/irq-vic.c')
-rw-r--r--drivers/irqchip/irq-vic.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-vic.c b/drivers/irqchip/irq-vic.c
index 37dab0b472cd..7d35287f9e90 100644
--- a/drivers/irqchip/irq-vic.c
+++ b/drivers/irqchip/irq-vic.c
@@ -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);
}
/*
OpenPOWER on IntegriCloud