diff options
Diffstat (limited to 'drivers/staging/rdma/hfi1/device.c')
| -rw-r--r-- | drivers/staging/rdma/hfi1/device.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/drivers/staging/rdma/hfi1/device.c b/drivers/staging/rdma/hfi1/device.c deleted file mode 100644 index bf64b5a7bfd7..000000000000 --- a/drivers/staging/rdma/hfi1/device.c +++ /dev/null @@ -1,183 +0,0 @@ -/* - * Copyright(c) 2015, 2016 Intel Corporation. - * - * This file is provided under a dual BSD/GPLv2 license. When using or - * redistributing this file, you may do so under either license. - * - * GPL LICENSE SUMMARY - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * BSD LICENSE - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - Neither the name of Intel Corporation nor the names of its - * contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - */ - -#include <linux/cdev.h> -#include <linux/module.h> -#include <linux/device.h> -#include <linux/fs.h> - -#include "hfi.h" -#include "device.h" - -static struct class *class; -static struct class *user_class; -static dev_t hfi1_dev; - -int hfi1_cdev_init(int minor, const char *name, - const struct file_operations *fops, - struct cdev *cdev, struct device **devp, - bool user_accessible, - struct kobject *parent) -{ - const dev_t dev = MKDEV(MAJOR(hfi1_dev), minor); - struct device *device = NULL; - int ret; - - cdev_init(cdev, fops); - cdev->owner = THIS_MODULE; - cdev->kobj.parent = parent; - kobject_set_name(&cdev->kobj, name); - - ret = cdev_add(cdev, dev, 1); - if (ret < 0) { - pr_err("Could not add cdev for minor %d, %s (err %d)\n", - minor, name, -ret); - goto done; - } - - if (user_accessible) - device = device_create(user_class, NULL, dev, NULL, "%s", name); - else - device = device_create(class, NULL, dev, NULL, "%s", name); - - if (IS_ERR(device)) { - ret = PTR_ERR(device); - device = NULL; - pr_err("Could not create device for minor %d, %s (err %d)\n", - minor, name, -ret); - cdev_del(cdev); - } -done: - *devp = device; - return ret; -} - -void hfi1_cdev_cleanup(struct cdev *cdev, struct device **devp) -{ - struct device *device = *devp; - - if (device) { - device_unregister(device); - *devp = NULL; - - cdev_del(cdev); - } -} - -static const char *hfi1_class_name = "hfi1"; - -const char *class_name(void) -{ - return hfi1_class_name; -} - -static char *hfi1_devnode(struct device *dev, umode_t *mode) -{ - if (mode) - *mode = 0600; - return kasprintf(GFP_KERNEL, "%s", dev_name(dev)); -} - -static const char *hfi1_class_name_user = "hfi1_user"; -static const char *class_name_user(void) -{ - return hfi1_class_name_user; -} - -static char *hfi1_user_devnode(struct device *dev, umode_t *mode) -{ - if (mode) - *mode = 0666; - return kasprintf(GFP_KERNEL, "%s", dev_name(dev)); -} - -int __init dev_init(void) -{ - int ret; - - ret = alloc_chrdev_region(&hfi1_dev, 0, HFI1_NMINORS, DRIVER_NAME); - if (ret < 0) { - pr_err("Could not allocate chrdev region (err %d)\n", -ret); - goto done; - } - - class = class_create(THIS_MODULE, class_name()); - if (IS_ERR(class)) { - ret = PTR_ERR(class); - pr_err("Could not create device class (err %d)\n", -ret); - unregister_chrdev_region(hfi1_dev, HFI1_NMINORS); - goto done; - } - class->devnode = hfi1_devnode; - - user_class = class_create(THIS_MODULE, class_name_user()); - if (IS_ERR(user_class)) { - ret = PTR_ERR(user_class); - pr_err("Could not create device class for user accessible files (err %d)\n", - -ret); - class_destroy(class); - class = NULL; - user_class = NULL; - unregister_chrdev_region(hfi1_dev, HFI1_NMINORS); - goto done; - } - user_class->devnode = hfi1_user_devnode; - -done: - return ret; -} - -void dev_cleanup(void) -{ - class_destroy(class); - class = NULL; - - class_destroy(user_class); - user_class = NULL; - - unregister_chrdev_region(hfi1_dev, HFI1_NMINORS); -} |