If there is no interrupt defined in the dts 'irq_of_parse_and_map'
returns 0 and we should't set up interrupts for each gpio chip in
that case.
Signed-off-by: Sergio Paracuellos <sergio.paracuellos@xxxxxxxxx>
---
drivers/staging/mt7621-gpio/gpio-mt7621.c | 42 ++++++++++++++++---------------
1 file changed, 22 insertions(+), 20 deletions(-)
diff --git a/drivers/staging/mt7621-gpio/gpio-mt7621.c b/drivers/staging/mt7621-gpio/gpio-mt7621.c
index 1318003..96dee10 100644
--- a/drivers/staging/mt7621-gpio/gpio-mt7621.c
+++ b/drivers/staging/mt7621-gpio/gpio-mt7621.c
@@ -237,30 +237,32 @@ mediatek_gpio_bank_probe(struct platform_device *pdev, struct device_node *bank)
return ret;
}
- /*
- * Manually request the irq here instead of passing a flow-handler
- * to gpiochip_set_chained_irqchip, because the irq is shared.
- */
- ret = devm_request_irq(&pdev->dev, gpio->gpio_irq,
- mediatek_gpio_irq_handler, IRQF_SHARED,
- "mt7621", &rg->chip);
+ if (gpio->gpio_irq) {
+ /*
+ * Manually request the irq here instead of passing a flow-handler
+ * to gpiochip_set_chained_irqchip, because the irq is shared.
+ */
+ ret = devm_request_irq(&pdev->dev, gpio->gpio_irq,
+ mediatek_gpio_irq_handler, IRQF_SHARED,
+ "mt7621", &rg->chip);
+
+ if (ret) {
+ dev_err(&pdev->dev, "Error requesting IRQ %d: %d\n",
+ gpio->gpio_irq, ret);
+ return ret;
+ }
- if (ret) {
- dev_err(&pdev->dev, "Error requesting IRQ %d: %d\n",
- gpio->gpio_irq, ret);
- return ret;
- }
+ ret = gpiochip_irqchip_add(&rg->chip, &mediatek_gpio_irq_chip,
+ 0, handle_simple_irq, IRQ_TYPE_NONE);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to add gpiochip_irqchip\n");
+ return ret;
+ }
- ret = gpiochip_irqchip_add(&rg->chip, &mediatek_gpio_irq_chip,
- 0, handle_simple_irq, IRQ_TYPE_NONE);
- if (ret) {
- dev_err(&pdev->dev, "failed to add gpiochip_irqchip\n");
- return ret;
+ gpiochip_set_chained_irqchip(&rg->chip, &mediatek_gpio_irq_chip,
+ gpio->gpio_irq, NULL);
}
- gpiochip_set_chained_irqchip(&rg->chip, &mediatek_gpio_irq_chip,
- gpio->gpio_irq, NULL);
-
/* set polarity to low for all gpios */
mtk_gpio_w32(rg, GPIO_REG_POL, 0);
--
2.7.4
_______________________________________________
devel mailing list
devel@xxxxxxxxxxxxxxxxxxxxxx
http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
