staging: kpc2000: introduce __func__

Instead of using the function name hard coded as string, using __func__
and the '%s'-placeholder will always give the current name of the
function. When renaming a function, the debugging-messages won't have to
be rewritten.

Signed-off-by: Fabian Krueger <fabian.krueger@fau.de>
Signed-off-by: Michael Scheiderer <michael.scheiderer@fau.de>
Cc: <linux-kernel@i4.cs.fau.de>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/kpc2000/kpc2000_spi.c

@@ -439,13 +439,14 @@ kp_spi_probe(struct platform_device *pldev)
 
 	drvdata = pldev->dev.platform_data;
 	if (!drvdata) {
-		dev_err(&pldev->dev, "kp_spi_probe: platform_data is NULL!\n");
+		dev_err(&pldev->dev, "%s: platform_data is NULL\n", __func__);
 		return -ENODEV;
 	}
 
 	master = spi_alloc_master(&pldev->dev, sizeof(struct kp_spi));
 	if (master == NULL) {
-		dev_err(&pldev->dev, "kp_spi_probe: master allocation failed\n");
+		dev_err(&pldev->dev, "%s: master allocation failed\n",
+			__func__);
 		return -ENOMEM;
 	}
 
@@ -469,7 +470,8 @@ kp_spi_probe(struct platform_device *pldev)
 
 	r = platform_get_resource(pldev, IORESOURCE_MEM, 0);
 	if (r == NULL) {
-		dev_err(&pldev->dev, "kp_spi_probe: Unable to get platform resources\n");
+		dev_err(&pldev->dev, "%s: Unable to get platform resources\n",
+			__func__);
 		status = -ENODEV;
 		goto free_master;
 	}