Add the rt linux 4.1.3-rt3 as base

Import the rt linux 4.1.3-rt3 as OPNFV kvm base.

It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:

commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date:   Sat Jul 25 12:13:34 2015 +0200

    Prepare v4.1.3-rt3

    Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>

We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.

Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>

1 files changed, 93 insertions, 0 deletions

diff --git a/kernel/drivers/regulator/dummy.c b/kernel/drivers/regulator/dummy.c
new file mode 100644
index 000000000..cde749778
--- /dev/null
+++ b/kernel/drivers/regulator/dummy.c
@@ -0,0 +1,93 @@
+/*
+ * dummy.c
+ *
+ * Copyright 2010 Wolfson Microelectronics PLC.
+ *
+ * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of the
+ * License, or (at your option) any later version.
+ *
+ * This is useful for systems with mixed controllable and
+ * non-controllable regulators, as well as for allowing testing on
+ * systems with no controllable regulators.
+ */
+
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+
+#include "dummy.h"
+
+struct regulator_dev *dummy_regulator_rdev;
+
+static struct regulator_init_data dummy_initdata = {
+	.constraints = {
+		.always_on = 1,
+	},
+};
+
+static struct regulator_ops dummy_ops;
+
+static const struct regulator_desc dummy_desc = {
+	.name = "regulator-dummy",
+	.id = -1,
+	.type = REGULATOR_VOLTAGE,
+	.owner = THIS_MODULE,
+	.ops = &dummy_ops,
+};
+
+static int dummy_regulator_probe(struct platform_device *pdev)
+{
+	struct regulator_config config = { };
+	int ret;
+
+	config.dev = &pdev->dev;
+	config.init_data = &dummy_initdata;
+
+	dummy_regulator_rdev = regulator_register(&dummy_desc, &config);
+	if (IS_ERR(dummy_regulator_rdev)) {
+		ret = PTR_ERR(dummy_regulator_rdev);
+		pr_err("Failed to register regulator: %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static struct platform_driver dummy_regulator_driver = {
+	.probe		= dummy_regulator_probe,
+	.driver		= {
+		.name		= "reg-dummy",
+	},
+};
+
+static struct platform_device *dummy_pdev;
+
+void __init regulator_dummy_init(void)
+{
+	int ret;
+
+	dummy_pdev = platform_device_alloc("reg-dummy", -1);
+	if (!dummy_pdev) {
+		pr_err("Failed to allocate dummy regulator device\n");
+		return;
+	}
+
+	ret = platform_device_add(dummy_pdev);
+	if (ret != 0) {
+		pr_err("Failed to register dummy regulator device: %d\n", ret);
+		platform_device_put(dummy_pdev);
+		return;
+	}
+
+	ret = platform_driver_register(&dummy_regulator_driver);
+	if (ret != 0) {
+		pr_err("Failed to register dummy regulator driver: %d\n", ret);
+		platform_device_unregister(dummy_pdev);
+	}
+}