[PATCH 02/10] irqchip: sunxi-nmi: Document interrupt disabling and clearing at probe time

[Chen-Yu Tsai]

The sunxi-nmi disables all its interrupts and clears any pending
interrupts at probe time.

Add comments documenting it, just to make it clear.

Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
 drivers/irqchip/irq-sunxi-nmi.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/irqchip/irq-sunxi-nmi.c b/drivers/irqchip/irq-sunxi-nmi.c
index 177efb473c7d..9a7f6971cc3a 100644
--- a/drivers/irqchip/irq-sunxi-nmi.c
+++ b/drivers/irqchip/irq-sunxi-nmi.c
@@ -201,7 +201,10 @@ static int __init sunxi_sc_nmi_irq_init(struct device_node 
*node,
        gc->chip_types[1].regs.type             = reg_offs->ctrl;
        gc->chip_types[1].handler               = handle_edge_irq;
 
+       /* Disable any active interrupts */
        sunxi_sc_nmi_write(gc, reg_offs->enable, 0);
+
+       /* Clear any pending NMI interrupts */
        sunxi_sc_nmi_write(gc, reg_offs->pend, SUNXI_NMI_IRQ_BIT);
 
        irq_set_chained_handler_and_data(irq, sunxi_sc_nmi_handle_irq, domain);
-- 
2.11.0