From: Lars Povlsen <lars.povlsen@xxxxxxxxxxxxx> [ Upstream commit 550713e33f4338c8596776828a936fd1e3bf35de ] This fixes the situation where the GPIO controller is not used as an interrupt controller as well. Previously, the driver would silently fail to register even the GPIO's. With this change, the driver will only register as an interrupt controller if a parent interrupt is provided. Reviewed-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx> Signed-off-by: Lars Povlsen <lars.povlsen@xxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20200513125532.24585-2-lars.povlsen@xxxxxxxxxxxxx Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/pinctrl/pinctrl-ocelot.c | 30 +++++++++++++++--------------- 1 file changed, 15 insertions(+), 15 deletions(-) diff --git a/drivers/pinctrl/pinctrl-ocelot.c b/drivers/pinctrl/pinctrl-ocelot.c index 4b99922d6c7e..b1bf46ec207f 100644 --- a/drivers/pinctrl/pinctrl-ocelot.c +++ b/drivers/pinctrl/pinctrl-ocelot.c @@ -752,21 +752,21 @@ static int ocelot_gpiochip_register(struct platform_device *pdev, gc->of_node = info->dev->of_node; gc->label = "ocelot-gpio"; - irq = irq_of_parse_and_map(pdev->dev.of_node, 0); - if (irq <= 0) - return irq; - - girq = &gc->irq; - girq->chip = &ocelot_irqchip; - girq->parent_handler = ocelot_irq_handler; - girq->num_parents = 1; - girq->parents = devm_kcalloc(&pdev->dev, 1, sizeof(*girq->parents), - GFP_KERNEL); - if (!girq->parents) - return -ENOMEM; - girq->parents[0] = irq; - girq->default_type = IRQ_TYPE_NONE; - girq->handler = handle_edge_irq; + irq = irq_of_parse_and_map(gc->of_node, 0); + if (irq) { + girq = &gc->irq; + girq->chip = &ocelot_irqchip; + girq->parent_handler = ocelot_irq_handler; + girq->num_parents = 1; + girq->parents = devm_kcalloc(&pdev->dev, 1, + sizeof(*girq->parents), + GFP_KERNEL); + if (!girq->parents) + return -ENOMEM; + girq->parents[0] = irq; + girq->default_type = IRQ_TYPE_NONE; + girq->handler = handle_edge_irq; + } ret = devm_gpiochip_add_data(&pdev->dev, gc, info); if (ret) -- 2.25.1
