This flag causes mlxreg-hotplug probing failure after flag "IRQF_NO_AUTOEN" has been added to: err = devm_request_irq(&pdev->dev, priv->irq, mlxreg_hotplug_irq_handler, IRQF_TRIGGER_FALLING | IRQF_SHARED | IRQF_NO_AUTOEN, "mlxreg-hotplug", priv); This is because request_threaded_irq() returns EINVAL due to true value of condition: ((irqflags & IRQF_SHARED) && (irqflags & IRQF_NO_AUTOEN)) Fixes: bee3ecfed0fc9 ("platform/mellanox: mlxreg-hotplug: move to use request_irq by IRQF_NO_AUTOEN flag") Signed-off-by: Mykola Kostenok <c_mykolak@xxxxxxxxxx> Reviewed-by: Vadim Pasternak <vadimp@xxxxxxxxxx> --- drivers/platform/mellanox/mlxreg-hotplug.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c index a9db2f32658f..07706f0a6d77 100644 --- a/drivers/platform/mellanox/mlxreg-hotplug.c +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -683,8 +683,7 @@ static int mlxreg_hotplug_probe(struct platform_device *pdev) err = devm_request_irq(&pdev->dev, priv->irq, mlxreg_hotplug_irq_handler, IRQF_TRIGGER_FALLING - | IRQF_SHARED | IRQF_NO_AUTOEN, - "mlxreg-hotplug", priv); + | IRQF_SHARED, "mlxreg-hotplug", priv); if (err) { dev_err(&pdev->dev, "Failed to request irq: %d\n", err); return err; -- 2.20.1