diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2014-04-15 08:28:04 (GMT) |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-04-15 16:24:24 (GMT) |
| commit | f6da9fe45c3074b909084ae9da5f55034ebffeb4 (patch) | |
| tree | c685c591ed6bb202da2b8fd204ee53a0630b652c /drivers/irqchip | |
| parent | 55101e2d6ce1c780f6ee8fee5f37306971aac6cd (diff) | |
| download | linux-f6da9fe45c3074b909084ae9da5f55034ebffeb4.tar.xz | |
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')
| -rw-r--r-- | drivers/irqchip/irq-vic.c | 6 |
1 files changed, 6 insertions, 0 deletions
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); } /* |