Some peripheral subsystems request IRQ_TYPE_EDGE_BOTH interrupt type and report request failures on LIOINTC. To avoid such failures we support to set IRQ_TYPE_EDGE_BOTH type on LIOINTC, by setting LIOINTC_REG_INTC_EDGE to true and keep LIOINTC_REG_INTC_POL as is.

Cc: stable@vger.kernel.org Signed-off-by: Yinbo Zhu zhuyinbo@loongson.cn Signed-off-by: Huacai Chen chenhuacai@loongson.cn --- drivers/irqchip/irq-loongson-liointc.c | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/drivers/irqchip/irq-loongson-liointc.c b/drivers/irqchip/irq-loongson-liointc.c index 2b1bd4a96665..c0c8ef8d27cf 100644 --- a/drivers/irqchip/irq-loongson-liointc.c +++ b/drivers/irqchip/irq-loongson-liointc.c @@ -128,6 +128,10 @@ static int liointc_set_type(struct irq_data *data, unsigned int type) liointc_set_bit(gc, LIOINTC_REG_INTC_EDGE, mask, false); liointc_set_bit(gc, LIOINTC_REG_INTC_POL, mask, true); break; + case IRQ_TYPE_EDGE_BOTH: + liointc_set_bit(gc, LIOINTC_REG_INTC_EDGE, mask, true); + /* Requester need "both", keep LIOINTC_REG_INTC_POL as is */ + break; case IRQ_TYPE_EDGE_RISING: liointc_set_bit(gc, LIOINTC_REG_INTC_EDGE, mask, true); liointc_set_bit(gc, LIOINTC_REG_INTC_POL, mask, false);