Commit-ID: f6da9fe45c3074b909084ae9da5f55034ebffeb4 Gitweb: http://git.kernel.org/tip/f6da9fe45c3074b909084ae9da5f55034ebffeb4 Author: Linus Walleij <[email protected]> AuthorDate: Tue, 15 Apr 2014 10:28:04 +0200 Committer: Thomas Gleixner <[email protected]> CommitDate: Tue, 15 Apr 2014 18:24:24 +0200
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 <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Thomas Gleixner <[email protected]> --- 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 37dab0b..7d35287 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); } /* -- 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/
