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Subject[PATCH 08/19] irqchip/mmp: coexist with GIC root IRQ controller
Date
On MMP3, the GIC can be set as a root IRQ interrupt controller. If the
device tree indicated that GIC is enabled, avoid hooking up
mmp2_handle_irq().

The interrupt muxes are still being used.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
---
drivers/irqchip/irq-mmp.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-mmp.c b/drivers/irqchip/irq-mmp.c
index 25497c75cc861..28feb0f393056 100644
--- a/drivers/irqchip/irq-mmp.c
+++ b/drivers/irqchip/irq-mmp.c
@@ -472,8 +472,13 @@ static int __init mmp3_of_init(struct device_node *node,
icu_data[0].conf_disable = mmp3_conf.conf_disable;
icu_data[0].conf_mask = mmp3_conf.conf_mask;
icu_data[0].conf2_mask = mmp3_conf.conf2_mask;
- irq_set_default_host(icu_data[0].domain);
- set_handle_irq(mmp2_handle_irq);
+
+ if (!parent) {
+ /* This is the main interrupt controller. */
+ irq_set_default_host(icu_data[0].domain);
+ set_handle_irq(mmp2_handle_irq);
+ }
+
max_icu_nr = 1;
return 0;
}
--
2.21.0
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