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gpio: mxc: Only get the second IRQ when there is more than one IRQ 

On some of i.MX SoCs like i.MX8QXP, there is ONLY one IRQ for each
GPIO bank, so it is better to check the IRQ count before getting
second IRQ to avoid below error message during probe:

[    1.070908] gpio-mxc 5d080000.gpio: IRQ index 1 not found
[    1.077420] gpio-mxc 5d090000.gpio: IRQ index 1 not found
[    1.083766] gpio-mxc 5d0a0000.gpio: IRQ index 1 not found
[    1.090122] gpio-mxc 5d0b0000.gpio: IRQ index 1 not found
[    1.096470] gpio-mxc 5d0c0000.gpio: IRQ index 1 not found
[    1.102804] gpio-mxc 5d0d0000.gpio: IRQ index 1 not found
[    1.109144] gpio-mxc 5d0e0000.gpio: IRQ index 1 not found
[    1.115475] gpio-mxc 5d0f0000.gpio: IRQ index 1 not found

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
alistair/sunxi64-5.5-dsi
Anson Huang 2019-09-19 17:39:17 +08:00 committed by Bartosz Golaszewski
parent 54ecb8f702
commit c8f3d14400
1 changed files with 10 additions and 3 deletions
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13
drivers/gpio/gpio-mxc.c
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@ -411,6 +411,7 @@ static int mxc_gpio_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct mxc_gpio_port *port;
int irq_count;
int irq_base;
int err;
@ -426,9 +427,15 @@ static int mxc_gpio_probe(struct platform_device *pdev)
if (IS_ERR(port->base))
return PTR_ERR(port->base);
port->irq_high = platform_get_irq(pdev, 1);
if (port->irq_high < 0)
port->irq_high = 0;
irq_count = platform_irq_count(pdev);
if (irq_count < 0)
return irq_count;
if (irq_count > 1) {
port->irq_high = platform_get_irq(pdev, 1);
if (port->irq_high < 0)
port->irq_high = 0;
}
port->irq = platform_get_irq(pdev, 0);
if (port->irq < 0)