i2c: davinci: switch to use platform_get_irq

Switch Davinci I2C driver to use platform_get_irq(), because
it is not recommened to use platform_get_resource(pdev, IORESOURCE_IRQ, ..)
for requesting IRQ resources any more, as they can be not ready yet
in case of DT-boot.

Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/busses/i2c-davinci.c

@@ -634,13 +634,17 @@ static int davinci_i2c_probe(struct platform_device *pdev)
 {
 	struct davinci_i2c_dev *dev;
 	struct i2c_adapter *adap;
-	struct resource *mem, *irq;
-	int r;
-
-	irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!irq) {
-		dev_err(&pdev->dev, "no irq resource?\n");
-		return -ENODEV;
+	struct resource *mem;
+	int r, irq;
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq <= 0) {
+		if (!irq)
+			irq = -ENXIO;
+		if (irq != -EPROBE_DEFER)
+			dev_err(&pdev->dev,
+				"can't get irq resource ret=%d\n", irq);
+		return irq;
 	}
 
 	dev = devm_kzalloc(&pdev->dev, sizeof(struct davinci_i2c_dev),
@@ -655,7 +659,7 @@ static int davinci_i2c_probe(struct platform_device *pdev)
 	init_completion(&dev->xfr_complete);
 #endif
 	dev->dev = &pdev->dev;
-	dev->irq = irq->start;
+	dev->irq = irq;
 	dev->pdata = dev_get_platdata(&pdev->dev);
 	platform_set_drvdata(pdev, dev);