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Subject[PATCH 01/14] pinctrl: ocelot: Should register GPIO's even if not irq controller
Date
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@bootlin.com>
Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
---
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 ed8eac6c14944..d4ac65b1efc0b 100644
--- a/drivers/pinctrl/pinctrl-ocelot.c
+++ b/drivers/pinctrl/pinctrl-ocelot.c
@@ -751,21 +751,21 @@ 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)
--
2.26.2
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