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authorLinus Torvalds <torvalds@linux-foundation.org>2014-04-16 16:36:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-04-16 16:36:00 -0700
commit17cf7db27b3af29ebbc14466785236878aad98eb (patch)
tree0306c42176f4eca07c90cf34f3aa5896b53c6510 /drivers
parentd99d5917e7eff7308d11b76328102ad24d03af73 (diff)
parentf6da9fe45c3074b909084ae9da5f55034ebffeb4 (diff)
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Ingo Molnar: "ARM VIC (Vectored Irq Controller) irqchip driver fix" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip: vic: Properly chain the cascaded IRQs
Diffstat (limited to 'drivers')
-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);
}
/*