Input: apbps2 - convert to devm_ioremap_resource()

Use the newly introduced devm_ioremap_resource() instead of
devm_request_and_ioremap() which provides more consistent error handling.

devm_ioremap_resource() provides its own error messages; so all explicit
error messages can be removed from the failure code paths.
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/serio/apbps2.c

@@ -147,11 +147,9 @@ static int apbps2_of_probe(struct platform_device *ofdev)
 
 	/* Find Device Address */
 	res = platform_get_resource(ofdev, IORESOURCE_MEM, 0);
-	priv->regs = devm_request_and_ioremap(&ofdev->dev, res);
-	if (!priv->regs) {
-		dev_err(&ofdev->dev, "io-regs mapping failed\n");
-		return -EBUSY;
-	}
+	priv->regs = devm_ioremap_resource(&ofdev->dev, res);
+	if (IS_ERR(priv->regs))
+		return PTR_ERR(priv->regs);
 
 	/* Reset hardware, disable interrupt */
 	iowrite32be(0, &priv->regs->ctrl);