From: Magnus Damm <damm+renesas@xxxxxxxxxxxxx> Booting sh73a0 KZM9G results in the following on the console: [ 0.030000] renesas_intc_irqpin e6900000.interrupt-controller: driving 8 irqs [ 0.040000] random: crng init done [ 0.120000] irq 35: nobody cared (try booting with the "irqpoll" option) [ 0.120000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.16.0-rc5 #4 [ 0.120000] Hardware name: Generic SH73A0 (Flattened Device Tree) ... [ 0.120000] Disabling IRQ #35 [ 0.120000] renesas_intc_irqpin e6900004.interrupt-controller: driving 8 irqs Judging by the friendly board documentation there is nothing hooked up to that IRQ line. I wish we had proper schematics and not a less detailed board manual. With this patch I've tried to extend the irqpin driver to mask all interrupts on boot but it does not seem to help. Perhaps the PFC hardware needs to be configured somehow. More effort is needed to solve this issue. Not for upstream merge. Not-Yet-Signed-off-by: Magnus Damm <damm+renesas@xxxxxxxxxxxxx> --- Developed on top of renesas-drivers-2018-03-13-v4.16-rc5 drivers/irqchip/irq-renesas-intc-irqpin.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- 0001/drivers/irqchip/irq-renesas-intc-irqpin.c +++ work/drivers/irqchip/irq-renesas-intc-irqpin.c 2018-03-20 14:31:02.420607110 +0900 @@ -558,11 +558,11 @@ static int intc_irqpin_probe(struct plat } } } - +#if 0 /* unmask all interrupts on prio level */ for (k = 0; k < nirqs; k++) intc_irqpin_mask_unmask_prio(p, k, 0); - +#endif dev_info(dev, "driving %d irqs\n", nirqs); return 0;
