If no interrupts are set in IntEventX directly skip to the end of the
interrupt handler and return IRQ_NONE instead of IRQ_HANDLED.
This possibly allows to detect spurious interrupts if the i2c bus is fast
enough.
Signed-off-by: Sven Peter <sven@xxxxxxxxxxxxx>
---
drivers/usb/typec/tipd/core.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/typec/tipd/core.c b/drivers/usb/typec/tipd/core.c
index c2c399722c37..4a6d66250fef 100644
--- a/drivers/usb/typec/tipd/core.c
+++ b/drivers/usb/typec/tipd/core.c
@@ -434,6 +434,8 @@ static irqreturn_t tps6598x_interrupt(int irq, void *data)
trace_tps6598x_irq(event1, event2);
event = event1 | event2;
+ if (!event)
+ goto err_unlock;
ret = tps6598x_read32(tps, TPS_REG_STATUS, &status);
if (ret) {
@@ -481,7 +483,9 @@ static irqreturn_t tps6598x_interrupt(int irq, void *data)
err_unlock:
mutex_unlock(&tps->lock);
- return IRQ_HANDLED;
+ if (event)
+ return IRQ_HANDLED;
+ return IRQ_NONE;
}
static int tps6598x_check_mode(struct tps6598x *tps)
--
2.25.1
