From: Abhijeet Dharmapurikar <adharmap@xxxxxxxxxxx>
Disable all interrupts of a gic in distributor initialization function.
This way interrupts beyond NR_IRQS stay disabled.
Signed-off-by: Abhijeet Dharmapurikar <adharmap@xxxxxxxxxxx>
---
arch/arm/common/gic.c | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/arch/arm/common/gic.c b/arch/arm/common/gic.c
index 337741f..cd92ce0 100644
--- a/arch/arm/common/gic.c
+++ b/arch/arm/common/gic.c
@@ -175,6 +175,11 @@ void __init gic_cascade_irq(unsigned int gic_nr, unsigned int irq)
set_irq_chained_handler(irq, gic_handle_cascade_irq);
}
+/*
+ * In case of multiple cascaded GICs, order calls to gic_dist_init with
+ * ascending irq_start
+ */
+
void __init gic_dist_init(unsigned int gic_nr, void __iomem *base,
unsigned int irq_start)
{
@@ -200,11 +205,10 @@ void __init gic_dist_init(unsigned int gic_nr, void __iomem *base,
/*
* The GIC only supports up to 1020 interrupt sources.
- * Limit this to either the architected maximum, or the
- * platform maximum.
+ * Limit this to either the architected maximum
*/
- if (max_irq > max(1020, NR_IRQS))
- max_irq = max(1020, NR_IRQS);
+ if (max_irq > 1020)
+ max_irq = 1020;
/*
* Set all global interrupts to be level triggered, active low.
--
1.5.6.3
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