[PATCH] hwmon: (pwm-fan) disable threaded interrupts
From: John Keeping
Date: Thu Apr 10 2025 - 14:05:23 EST
The interrupt handler here just increments an atomic counter, jumping to
a threaded handler risks missing tachometer pulses and is likely to be
more expensive than the simple atomic increment.
Signed-off-by: John Keeping <jkeeping@xxxxxxxxxxxxxxxxx>
---
drivers/hwmon/pwm-fan.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/hwmon/pwm-fan.c b/drivers/hwmon/pwm-fan.c
index d506a5e7e033d..2df294793f6ee 100644
--- a/drivers/hwmon/pwm-fan.c
+++ b/drivers/hwmon/pwm-fan.c
@@ -620,8 +620,8 @@ static int pwm_fan_probe(struct platform_device *pdev)
if (tach->irq == -EPROBE_DEFER)
return tach->irq;
if (tach->irq > 0) {
- ret = devm_request_irq(dev, tach->irq, pulse_handler, 0,
- pdev->name, tach);
+ ret = devm_request_irq(dev, tach->irq, pulse_handler,
+ IRQF_NO_THREAD, pdev->name, tach);
if (ret) {
dev_err(dev,
"Failed to request interrupt: %d\n",
--
2.49.0