1 files changed, 0 insertions, 230 deletions

diff --git a/schulung_tools/drivers/modules/hellodriver/hello.c b/schulung_tools/drivers/modules/hellodriver/hello.c
deleted file mode 100644
index 7f78d06..0000000
--- a/schulung_tools/drivers/modules/hellodriver/hello.c
+++ /dev/null
@@ -1,230 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/fs.h>
-#include <linux/uaccess.h>
-#include <linux/slab.h>
-#include <linux/device.h>
-#include <linux/platform_device.h>
-#include <linux/cdev.h>
-#include <linux/of.h>
-
-struct hello_dev {
-	struct device *dev;
-	struct cdev cdev;
-	unsigned int minor;
-};
-
-#define HELLO_MAX_DEVICES 10
-
-static struct class *hello_class;
-static dev_t hello_devt;
-
-static int hello_open(struct inode *node, struct file *f)
-{
-	struct cdev *cd = node->i_cdev;
-	struct hello_dev *hello = container_of(cd, struct hello_dev, cdev);
-	dev_info(hello->dev, "%s\n", __func__);
-	f->private_data = hello;
-	return 0;
-}
-
-static int hello_release(struct inode *node, struct file *f)
-{
-	struct hello_dev *hello = f->private_data;
-	dev_info(hello->dev, "%s\n", __func__);
-	f->private_data = NULL;
-	return 0;
-}
-
-static ssize_t hello_read(struct file *f, char __user *u, size_t s, loff_t *l)
-{
-	struct hello_dev *hello = f->private_data;
-	char buf[10];
-	size_t len;
-
-	dev_info(hello->dev, "%s: size=%zu offset=%llu\n", __func__, s, *l);
-
-	if (*l >= 40)
-		return 0;
-
-	len = snprintf(buf, sizeof(buf), "hello:%d\n", hello->minor);
-
-	if (s < len)
-		len = s;
-
-	if (copy_to_user(u, buf, len) != 0)
-		return -EFAULT;
-
-	*l += len;
-
-	return len;
-}
-
-static ssize_t hello_write(struct file *f, const char __user *u, size_t s,
-			   loff_t *l)
-{
-	struct hello_dev *hello = f->private_data;
-	dev_info(hello->dev, "%s: size=%zu offset=%llu\n", __func__, s, *l);
-	return s;
-}
-
-static const struct file_operations hello_fops = {
-	.owner = THIS_MODULE,
-	.open = hello_open,
-	.release = hello_release,
-	.read = hello_read,
-	.write = hello_write,
-};
-
-static int hello_probe(struct platform_device *pdev)
-{
-	struct hello_dev *hello;
-	struct device *dev;
-	dev_t devt;
-	int ret;
-
-	hello = devm_kzalloc(&pdev->dev, sizeof(*hello), GFP_KERNEL);
-	if (!hello) {
-		dev_err(&pdev->dev, "devm_kzalloc failed\n");
-		return -ENOMEM;
-	}
-
-#ifdef CONFIG_OF
-	ret = of_property_read_u32(pdev->dev.of_node, "index", &hello->minor);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "no index specified\n");
-		goto err_out;
-	}
-#else
-	hello->minor = (unsigned)pdev->id;
-#endif
-
-	if (hello->minor >= HELLO_MAX_DEVICES) {
-		dev_err(&pdev->dev, "invalid index: %u\n", hello->minor);
-		ret = -EINVAL;
-		goto err_out;
-	}
-
-	hello->dev = &pdev->dev;
-	platform_set_drvdata(pdev, hello);
-
-	devt = MKDEV(MAJOR(hello_devt), hello->minor);
-
-	cdev_init(&hello->cdev, &hello_fops);
-	hello->cdev.owner = THIS_MODULE;
-	ret = cdev_add(&hello->cdev, devt, 1);
-	if (ret != 0) {
-		dev_err(&pdev->dev, "cdev_add failed\n");
-		goto err_drvdata;
-	}
-
-	dev = device_create(hello_class, &pdev->dev, devt, hello,
-			    "hello%d", hello->minor);
-	if (IS_ERR(dev)) {
-		dev_err(&pdev->dev, "device_create failed\n");
-		ret = PTR_ERR(dev);
-		goto err_cdev;
-	}
-
-	dev_info(&pdev->dev, "HELLO! I am hello device %d!\n", hello->minor);
-
-	return 0;
-
-err_cdev:
-	cdev_del(&hello->cdev);
-err_drvdata:
-	platform_set_drvdata(pdev, NULL);
-err_out:
-	return ret;
-}
-
-static int hello_remove(struct platform_device *pdev)
-{
-	struct hello_dev *hello = platform_get_drvdata(pdev);
-
-	device_destroy(hello_class, MKDEV(MAJOR(hello_devt), hello->minor));
-	cdev_del(&hello->cdev);
-	platform_set_drvdata(pdev, NULL);
-
-	dev_info(&pdev->dev, "GOODBYE! I was hello device %d!\n", hello->minor);
-
-	return 0;
-}
-
-static const struct of_device_id hello_match[] = {
-	{ .compatible = "virtual,hello", },
-	{ /* end of table */ }
-};
-
-static struct platform_driver hello_driver = {
-	.driver = {
-		.name = "hello",
-		.of_match_table = hello_match,
-	},
-	.probe = hello_probe,
-	.remove = hello_remove,
-};
-
-#ifndef CONFIG_OF
-static struct platform_device *pdevs[3];
-#endif
-
-static int __init hello_init(void)
-{
-	int ret;
-
-	printk(KERN_INFO "%s\n", __func__);
-
-	ret = alloc_chrdev_region(&hello_devt, 0, HELLO_MAX_DEVICES, "hello");
-	if (ret < 0)
-		return ret;
-
-	hello_class = class_create(THIS_MODULE, "hello");
-	if (IS_ERR(hello_class)) {
-		printk(KERN_ERR "%s: failed to create class\n", __func__);
-		ret = PTR_ERR(hello_class);
-		goto err_region;
-	}
-
-	ret = platform_driver_register(&hello_driver);
-	if (ret != 0)
-		goto err_class;
-
-#ifndef CONFIG_OF
-	pdevs[0] = platform_device_register_simple("hello", 1, NULL, 0);
-	pdevs[1] = platform_device_register_simple("hello", 3, NULL, 0);
-	pdevs[2] = platform_device_register_simple("hello", 5, NULL, 0);
-#endif
-
-	return 0;
-
-err_class:
-	class_destroy(hello_class);
-err_region:
-	unregister_chrdev_region(hello_devt, HELLO_MAX_DEVICES);
-	return ret;
-}
-
-static void __exit hello_exit(void)
-{
-	printk(KERN_INFO "%s\n", __func__);
-
-#ifndef CONFIG_OF
-	platform_device_unregister(pdevs[0]);
-	platform_device_unregister(pdevs[1]);
-	platform_device_unregister(pdevs[2]);
-#endif
-
-	platform_driver_unregister(&hello_driver);
-	class_destroy(hello_class);
-	unregister_chrdev_region(hello_devt, HELLO_MAX_DEVICES);
-}
-
-module_init(hello_init);
-module_exit(hello_exit);
-
-MODULE_AUTHOR("John Ogness <john.ogness@linutronix.de>");
-MODULE_DESCRIPTION("a great module for hello-ing!");
-MODULE_LICENSE("GPL v2");
-MODULE_VERSION("20190101");