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authorHaojian Zhuang <haojian.zhuang@linaro.org>2014-05-11 12:05:58 +0400
committerJason Cooper <jason@lakedaemon.net>2014-05-19 04:35:23 +0400
commitb8802f76fe473d91886220498aeda157c492f2d1 (patch)
tree577ce870c39992ca6638ee3d3c0d66548a57db61 /drivers/irqchip/irq-gic.c
parentc9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff)
downloadlinux-b8802f76fe473d91886220498aeda157c492f2d1.tar.xz
irqchip: gic: Use mask field in GICC_IAR
Bit[9:0] is interrupt ID field in GICC_IAR. Bit[12:10] is CPU ID field, and others are reserved. So we should use GICC_IAR_INT_ID_MASK to get interrupt ID. It's not a good way to use ~0x1c00 (CPU ID field) to get interrupt ID. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> Link: https://lkml.kernel.org/r/1399795571-17231-3-git-send-email-haojian.zhuang@linaro.org Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Diffstat (limited to 'drivers/irqchip/irq-gic.c')
-rw-r--r--drivers/irqchip/irq-gic.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 4300b6606f5e..f711fb6af7a9 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -287,7 +287,7 @@ static void __exception_irq_entry gic_handle_irq(struct pt_regs *regs)
do {
irqstat = readl_relaxed(cpu_base + GIC_CPU_INTACK);
- irqnr = irqstat & ~0x1c00;
+ irqnr = irqstat & GICC_IAR_INT_ID_MASK;
if (likely(irqnr > 15 && irqnr < 1021)) {
irqnr = irq_find_mapping(gic->domain, irqnr);