[v2] irqchip: ls-extirq: add flag IRQCHIP_SKIP_SET_WAKE to remove call trace

Biwen Li
2021-01-27T08:54:41Z

From: Biwen Li <biwen.li@nxp.com>

Add flag IRQCHIP_SKIP_SET_WAKE to remove call trace as follow,
...
[ 45.605239] Unbalanced IRQ 120 wake disable
[ 45.609445] WARNING: CPU: 0 PID: 1124 at kernel/irq/manage.c:800 irq_set_irq_wake+0x154/0x1a0
...
[ 45.645141] pstate: 60000085 (nZCv daIf -PAN -UAO -TCO BTYPE=--)
[ 45.651144] pc : irq_set_irq_wake+0x154/0x1a0
[ 45.655497] lr : irq_set_irq_wake+0x154/0x1a0
...
[ 45.742825] Call trace:
[ 45.745268] irq_set_irq_wake+0x154/0x1a0
[ 45.749278] ds3232_resume+0x38/0x50

On ls2088ardb:
In suspend progress(# echo mem > /sys/power/state),
pm_suspend()->suspend_devices_and_enter()->dpm_suspend()->device_suspend()
->ds3232_suspend()->enable_irq_wake()->irq_set_irq_wake()
->set_irq_wake_real(), return -ENXIO, there get
"Cannot set wakeup source" in ds3232_suspend().

In resume progress(wakeup by flextimer)
dpm_resume_end()->dpm_resume()
->device_resume()->ds3232_resume()
->disable_irq_wake()->irq_set_irq_wake()
->set_irq_wake_real(), there get
kernel call trace(Unbalanced IRQ 120 wake
disable)

Signed-off-by: Biwen Li <biwen.li@nxp.com>
---
Change in v2:
- update description

drivers/irqchip/irq-ls-extirq.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/irqchip/irq-ls-extirq.c b/drivers/irqchip/irq-ls-extirq.c
index 564e6de0bd8e..3c6ed7b4744d 100644
--- a/drivers/irqchip/irq-ls-extirq.c
+++ b/drivers/irqchip/irq-ls-extirq.c
@@ -65,7 +65,7 @@ static struct irq_chip ls_extirq_chip = {
.irq_set_type = ls_extirq_set_type,
.irq_retrigger = irq_chip_retrigger_hierarchy,
.irq_set_affinity = irq_chip_set_affinity_parent,
- .flags = IRQCHIP_SET_TYPE_MASKED,
+ .flags = IRQCHIP_SET_TYPE_MASKED | IRQCHIP_SKIP_SET_WAKE,
};

static int
--
2.17.1