ARM: pxa: pxa_cplds: honor probe deferral

The method to acquire the input interrupt was working in a platform data
based board, but was failing in a device-tree one when the gpio
controller was probed after pxa_cplds.

Use platform_get_irq() to benefit from the probe deferral
mechanism. Moreover, as seen in dm9000.c development, platform_get_irq()
doesn't honor the irq type IO resource (ie. edge rising for example),
and it must be passed again at irq request in a not device-tree build,
hence the irq_get_trigger_type() call.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>

1 files changed, 4 insertions, 7 deletions

diff --git a/arch/arm/mach-pxa/pxa_cplds_irqs.c b/arch/arm/mach-pxa/pxa_cplds_irqs.c
index e362f865fcd2..941508585e34 100644
--- a/arch/arm/mach-pxa/pxa_cplds_irqs.c
+++ b/arch/arm/mach-pxa/pxa_cplds_irqs.c
@@ -120,13 +120,9 @@ static int cplds_probe(struct platform_device *pdev)
         if (!fpga)
                 return -ENOMEM;
 
-        res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-        if (res) {
-                fpga->irq = (unsigned int)res->start;
-                irqflags = res->flags;
-        }
-        if (!fpga->irq)
-                return -ENODEV;
+        fpga->irq = platform_get_irq(pdev, 0);
+        if (fpga->irq <= 0)
+                return fpga->irq;
 
         base_irq = platform_get_irq(pdev, 1);
         if (base_irq < 0)
@@ -142,6 +138,7 @@ static int cplds_probe(struct platform_device *pdev)
         writel(fpga->irq_mask, fpga->base + FPGA_IRQ_MASK_EN);
         writel(0, fpga->base + FPGA_IRQ_SET_CLR);
 
+        irqflags = irq_get_trigger_type(fpga->irq);
         ret = devm_request_irq(&pdev->dev, fpga->irq, cplds_irq_handler,
                                irqflags, dev_name(&pdev->dev), fpga);
         if (ret == -ENOSYS)