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.
Cc: Thomas Gleixner <[email protected]> Signed-off-by: Linus Walleij <[email protected]> --- Hi Thomas, please pick this fix for v3.15-rc:s if it's OK. --- drivers/irqchip/irq-vic.c | 6 ++++++ 1 file changed, 6 insertions(+) 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); } /* -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
