![Tomas Winkler](/assets/img/avatar_default.png)
On memory allocation failure mei_cl_irq_read_msg will return with error that will cause device reset. Instead we should propagate error to caller and just clean the read queues. Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
847 lines
18 KiB
C
847 lines
18 KiB
C
/*
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*
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* Intel Management Engine Interface (Intel MEI) Linux driver
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* Copyright (c) 2003-2012, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kernel.h>
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#include <linux/device.h>
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#include <linux/slab.h>
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#include <linux/fs.h>
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#include <linux/errno.h>
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#include <linux/types.h>
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#include <linux/fcntl.h>
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#include <linux/aio.h>
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#include <linux/poll.h>
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#include <linux/init.h>
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#include <linux/ioctl.h>
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#include <linux/cdev.h>
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#include <linux/sched.h>
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#include <linux/uuid.h>
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#include <linux/compat.h>
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#include <linux/jiffies.h>
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#include <linux/interrupt.h>
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#include <linux/mei.h>
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#include "mei_dev.h"
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#include "client.h"
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/**
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* mei_open - the open function
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*
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* @inode: pointer to inode structure
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* @file: pointer to file structure
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*
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* Return: 0 on success, <0 on error
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*/
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static int mei_open(struct inode *inode, struct file *file)
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{
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struct mei_device *dev;
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struct mei_cl *cl;
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int err;
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dev = container_of(inode->i_cdev, struct mei_device, cdev);
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if (!dev)
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return -ENODEV;
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mutex_lock(&dev->device_lock);
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cl = NULL;
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err = -ENODEV;
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if (dev->dev_state != MEI_DEV_ENABLED) {
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dev_dbg(dev->dev, "dev_state != MEI_ENABLED dev_state = %s\n",
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mei_dev_state_str(dev->dev_state));
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goto err_unlock;
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}
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err = -ENOMEM;
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cl = mei_cl_allocate(dev);
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if (!cl)
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goto err_unlock;
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/* open_handle_count check is handled in the mei_cl_link */
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err = mei_cl_link(cl, MEI_HOST_CLIENT_ID_ANY);
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if (err)
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goto err_unlock;
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file->private_data = cl;
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mutex_unlock(&dev->device_lock);
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return nonseekable_open(inode, file);
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err_unlock:
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mutex_unlock(&dev->device_lock);
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kfree(cl);
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return err;
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}
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/**
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* mei_release - the release function
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*
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* @inode: pointer to inode structure
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* @file: pointer to file structure
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*
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* Return: 0 on success, <0 on error
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*/
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static int mei_release(struct inode *inode, struct file *file)
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{
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struct mei_cl *cl = file->private_data;
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struct mei_cl_cb *cb;
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struct mei_device *dev;
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int rets = 0;
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if (WARN_ON(!cl || !cl->dev))
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return -ENODEV;
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dev = cl->dev;
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mutex_lock(&dev->device_lock);
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if (cl == &dev->iamthif_cl) {
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rets = mei_amthif_release(dev, file);
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goto out;
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}
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if (cl->state == MEI_FILE_CONNECTED) {
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cl->state = MEI_FILE_DISCONNECTING;
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cl_dbg(dev, cl, "disconnecting\n");
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rets = mei_cl_disconnect(cl);
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}
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mei_cl_flush_queues(cl);
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cl_dbg(dev, cl, "removing\n");
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mei_cl_unlink(cl);
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/* free read cb */
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cb = NULL;
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if (cl->read_cb) {
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cb = mei_cl_find_read_cb(cl);
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/* Remove entry from read list */
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if (cb)
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list_del(&cb->list);
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cb = cl->read_cb;
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cl->read_cb = NULL;
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}
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file->private_data = NULL;
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mei_io_cb_free(cb);
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kfree(cl);
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out:
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mutex_unlock(&dev->device_lock);
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return rets;
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}
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/**
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* mei_read - the read function.
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*
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* @file: pointer to file structure
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* @ubuf: pointer to user buffer
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* @length: buffer length
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* @offset: data offset in buffer
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*
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* Return: >=0 data length on success , <0 on error
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*/
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static ssize_t mei_read(struct file *file, char __user *ubuf,
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size_t length, loff_t *offset)
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{
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struct mei_cl *cl = file->private_data;
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struct mei_cl_cb *cb_pos = NULL;
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struct mei_cl_cb *cb = NULL;
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struct mei_device *dev;
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int rets;
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int err;
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if (WARN_ON(!cl || !cl->dev))
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return -ENODEV;
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dev = cl->dev;
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mutex_lock(&dev->device_lock);
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if (dev->dev_state != MEI_DEV_ENABLED) {
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rets = -ENODEV;
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goto out;
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}
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if (length == 0) {
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rets = 0;
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goto out;
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}
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if (cl == &dev->iamthif_cl) {
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rets = mei_amthif_read(dev, file, ubuf, length, offset);
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goto out;
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}
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cb = cl->read_cb;
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if (cb) {
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/* read what left */
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if (cb->buf_idx > *offset)
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goto copy_buffer;
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/* offset is beyond buf_idx we have no more data return 0 */
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if (cb->buf_idx > 0 && cb->buf_idx <= *offset) {
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rets = 0;
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goto free;
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}
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/* Offset needs to be cleaned for contiguous reads*/
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if (cb->buf_idx == 0 && *offset > 0)
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*offset = 0;
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} else if (*offset > 0) {
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*offset = 0;
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}
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err = mei_cl_read_start(cl, length);
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if (err && err != -EBUSY) {
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dev_dbg(dev->dev,
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"mei start read failure with status = %d\n", err);
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rets = err;
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goto out;
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}
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if (MEI_READ_COMPLETE != cl->reading_state &&
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!waitqueue_active(&cl->rx_wait)) {
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if (file->f_flags & O_NONBLOCK) {
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rets = -EAGAIN;
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goto out;
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}
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mutex_unlock(&dev->device_lock);
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if (wait_event_interruptible(cl->rx_wait,
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MEI_READ_COMPLETE == cl->reading_state ||
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mei_cl_is_transitioning(cl))) {
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if (signal_pending(current))
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return -EINTR;
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return -ERESTARTSYS;
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}
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mutex_lock(&dev->device_lock);
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if (mei_cl_is_transitioning(cl)) {
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rets = -EBUSY;
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goto out;
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}
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}
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cb = cl->read_cb;
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if (!cb) {
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rets = -ENODEV;
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goto out;
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}
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if (cl->reading_state != MEI_READ_COMPLETE) {
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rets = 0;
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goto out;
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}
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copy_buffer:
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/* now copy the data to user space */
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if (cb->status) {
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rets = cb->status;
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dev_dbg(dev->dev, "read operation failed %d\n", rets);
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goto free;
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}
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dev_dbg(dev->dev, "buf.size = %d buf.idx= %ld\n",
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cb->response_buffer.size, cb->buf_idx);
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if (length == 0 || ubuf == NULL || *offset > cb->buf_idx) {
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rets = -EMSGSIZE;
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goto free;
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}
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/* length is being truncated to PAGE_SIZE,
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* however buf_idx may point beyond that */
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length = min_t(size_t, length, cb->buf_idx - *offset);
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if (copy_to_user(ubuf, cb->response_buffer.data + *offset, length)) {
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dev_dbg(dev->dev, "failed to copy data to userland\n");
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rets = -EFAULT;
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goto free;
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}
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rets = length;
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*offset += length;
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if ((unsigned long)*offset < cb->buf_idx)
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goto out;
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free:
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cb_pos = mei_cl_find_read_cb(cl);
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/* Remove entry from read list */
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if (cb_pos)
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list_del(&cb_pos->list);
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mei_io_cb_free(cb);
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cl->reading_state = MEI_IDLE;
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cl->read_cb = NULL;
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out:
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dev_dbg(dev->dev, "end mei read rets= %d\n", rets);
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mutex_unlock(&dev->device_lock);
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return rets;
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}
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/**
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* mei_write - the write function.
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*
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* @file: pointer to file structure
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* @ubuf: pointer to user buffer
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* @length: buffer length
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* @offset: data offset in buffer
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*
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* Return: >=0 data length on success , <0 on error
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*/
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static ssize_t mei_write(struct file *file, const char __user *ubuf,
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size_t length, loff_t *offset)
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{
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struct mei_cl *cl = file->private_data;
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struct mei_me_client *me_cl = NULL;
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struct mei_cl_cb *write_cb = NULL;
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struct mei_device *dev;
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unsigned long timeout = 0;
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int rets;
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if (WARN_ON(!cl || !cl->dev))
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return -ENODEV;
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dev = cl->dev;
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mutex_lock(&dev->device_lock);
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if (dev->dev_state != MEI_DEV_ENABLED) {
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rets = -ENODEV;
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goto out;
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}
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me_cl = mei_me_cl_by_uuid_id(dev, &cl->cl_uuid, cl->me_client_id);
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if (!me_cl) {
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rets = -ENOTTY;
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goto out;
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}
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if (length == 0) {
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rets = 0;
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goto out;
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}
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if (length > me_cl->props.max_msg_length) {
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rets = -EFBIG;
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goto out;
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}
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if (cl->state != MEI_FILE_CONNECTED) {
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dev_err(dev->dev, "host client = %d, is not connected to ME client = %d",
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cl->host_client_id, cl->me_client_id);
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rets = -ENODEV;
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goto out;
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}
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if (cl == &dev->iamthif_cl) {
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write_cb = mei_amthif_find_read_list_entry(dev, file);
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if (write_cb) {
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timeout = write_cb->read_time +
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mei_secs_to_jiffies(MEI_IAMTHIF_READ_TIMER);
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if (time_after(jiffies, timeout) ||
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cl->reading_state == MEI_READ_COMPLETE) {
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*offset = 0;
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list_del(&write_cb->list);
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mei_io_cb_free(write_cb);
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write_cb = NULL;
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}
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}
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}
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/* free entry used in read */
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if (cl->reading_state == MEI_READ_COMPLETE) {
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*offset = 0;
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write_cb = mei_cl_find_read_cb(cl);
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if (write_cb) {
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list_del(&write_cb->list);
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mei_io_cb_free(write_cb);
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write_cb = NULL;
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cl->reading_state = MEI_IDLE;
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cl->read_cb = NULL;
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}
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} else if (cl->reading_state == MEI_IDLE)
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*offset = 0;
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write_cb = mei_io_cb_init(cl, file);
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if (!write_cb) {
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rets = -ENOMEM;
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goto out;
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}
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rets = mei_io_cb_alloc_req_buf(write_cb, length);
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if (rets)
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goto out;
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rets = copy_from_user(write_cb->request_buffer.data, ubuf, length);
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if (rets) {
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dev_dbg(dev->dev, "failed to copy data from userland\n");
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rets = -EFAULT;
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goto out;
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}
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if (cl == &dev->iamthif_cl) {
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rets = mei_amthif_write(dev, write_cb);
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if (rets) {
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dev_err(dev->dev,
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"amthif write failed with status = %d\n", rets);
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goto out;
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}
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mei_me_cl_put(me_cl);
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mutex_unlock(&dev->device_lock);
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return length;
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}
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rets = mei_cl_write(cl, write_cb, false);
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out:
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mei_me_cl_put(me_cl);
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mutex_unlock(&dev->device_lock);
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if (rets < 0)
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mei_io_cb_free(write_cb);
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return rets;
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}
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/**
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* mei_ioctl_connect_client - the connect to fw client IOCTL function
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*
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* @file: private data of the file object
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* @data: IOCTL connect data, input and output parameters
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*
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* Locking: called under "dev->device_lock" lock
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*
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* Return: 0 on success, <0 on failure.
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*/
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static int mei_ioctl_connect_client(struct file *file,
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struct mei_connect_client_data *data)
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{
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struct mei_device *dev;
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struct mei_client *client;
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struct mei_me_client *me_cl;
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struct mei_cl *cl;
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int rets;
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cl = file->private_data;
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dev = cl->dev;
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if (dev->dev_state != MEI_DEV_ENABLED)
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return -ENODEV;
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if (cl->state != MEI_FILE_INITIALIZING &&
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cl->state != MEI_FILE_DISCONNECTED)
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return -EBUSY;
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/* find ME client we're trying to connect to */
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me_cl = mei_me_cl_by_uuid(dev, &data->in_client_uuid);
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if (!me_cl || me_cl->props.fixed_address) {
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dev_dbg(dev->dev, "Cannot connect to FW Client UUID = %pUl\n",
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&data->in_client_uuid);
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return -ENOTTY;
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}
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cl->me_client_id = me_cl->client_id;
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cl->cl_uuid = me_cl->props.protocol_name;
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dev_dbg(dev->dev, "Connect to FW Client ID = %d\n",
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cl->me_client_id);
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dev_dbg(dev->dev, "FW Client - Protocol Version = %d\n",
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me_cl->props.protocol_version);
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dev_dbg(dev->dev, "FW Client - Max Msg Len = %d\n",
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me_cl->props.max_msg_length);
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/* if we're connecting to amthif client then we will use the
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* existing connection
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*/
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if (uuid_le_cmp(data->in_client_uuid, mei_amthif_guid) == 0) {
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dev_dbg(dev->dev, "FW Client is amthi\n");
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if (dev->iamthif_cl.state != MEI_FILE_CONNECTED) {
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rets = -ENODEV;
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goto end;
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}
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mei_cl_unlink(cl);
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kfree(cl);
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cl = NULL;
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dev->iamthif_open_count++;
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file->private_data = &dev->iamthif_cl;
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client = &data->out_client_properties;
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client->max_msg_length = me_cl->props.max_msg_length;
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client->protocol_version = me_cl->props.protocol_version;
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rets = dev->iamthif_cl.status;
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goto end;
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}
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/* prepare the output buffer */
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client = &data->out_client_properties;
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client->max_msg_length = me_cl->props.max_msg_length;
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client->protocol_version = me_cl->props.protocol_version;
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dev_dbg(dev->dev, "Can connect?\n");
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rets = mei_cl_connect(cl, file);
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end:
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mei_me_cl_put(me_cl);
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return rets;
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}
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/**
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* mei_ioctl - the IOCTL function
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*
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* @file: pointer to file structure
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* @cmd: ioctl command
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* @data: pointer to mei message structure
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*
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* Return: 0 on success , <0 on error
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*/
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static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
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{
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struct mei_device *dev;
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struct mei_cl *cl = file->private_data;
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struct mei_connect_client_data connect_data;
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int rets;
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if (WARN_ON(!cl || !cl->dev))
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return -ENODEV;
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dev = cl->dev;
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dev_dbg(dev->dev, "IOCTL cmd = 0x%x", cmd);
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mutex_lock(&dev->device_lock);
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if (dev->dev_state != MEI_DEV_ENABLED) {
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rets = -ENODEV;
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goto out;
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}
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switch (cmd) {
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case IOCTL_MEI_CONNECT_CLIENT:
|
|
dev_dbg(dev->dev, ": IOCTL_MEI_CONNECT_CLIENT.\n");
|
|
if (copy_from_user(&connect_data, (char __user *)data,
|
|
sizeof(struct mei_connect_client_data))) {
|
|
dev_dbg(dev->dev, "failed to copy data from userland\n");
|
|
rets = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
rets = mei_ioctl_connect_client(file, &connect_data);
|
|
if (rets)
|
|
goto out;
|
|
|
|
/* if all is ok, copying the data back to user. */
|
|
if (copy_to_user((char __user *)data, &connect_data,
|
|
sizeof(struct mei_connect_client_data))) {
|
|
dev_dbg(dev->dev, "failed to copy data to userland\n");
|
|
rets = -EFAULT;
|
|
goto out;
|
|
}
|
|
|
|
break;
|
|
|
|
default:
|
|
dev_err(dev->dev, ": unsupported ioctl %d.\n", cmd);
|
|
rets = -ENOIOCTLCMD;
|
|
}
|
|
|
|
out:
|
|
mutex_unlock(&dev->device_lock);
|
|
return rets;
|
|
}
|
|
|
|
/**
|
|
* mei_compat_ioctl - the compat IOCTL function
|
|
*
|
|
* @file: pointer to file structure
|
|
* @cmd: ioctl command
|
|
* @data: pointer to mei message structure
|
|
*
|
|
* Return: 0 on success , <0 on error
|
|
*/
|
|
#ifdef CONFIG_COMPAT
|
|
static long mei_compat_ioctl(struct file *file,
|
|
unsigned int cmd, unsigned long data)
|
|
{
|
|
return mei_ioctl(file, cmd, (unsigned long)compat_ptr(data));
|
|
}
|
|
#endif
|
|
|
|
|
|
/**
|
|
* mei_poll - the poll function
|
|
*
|
|
* @file: pointer to file structure
|
|
* @wait: pointer to poll_table structure
|
|
*
|
|
* Return: poll mask
|
|
*/
|
|
static unsigned int mei_poll(struct file *file, poll_table *wait)
|
|
{
|
|
struct mei_cl *cl = file->private_data;
|
|
struct mei_device *dev;
|
|
unsigned int mask = 0;
|
|
|
|
if (WARN_ON(!cl || !cl->dev))
|
|
return POLLERR;
|
|
|
|
dev = cl->dev;
|
|
|
|
mutex_lock(&dev->device_lock);
|
|
|
|
if (!mei_cl_is_connected(cl)) {
|
|
mask = POLLERR;
|
|
goto out;
|
|
}
|
|
|
|
mutex_unlock(&dev->device_lock);
|
|
|
|
|
|
if (cl == &dev->iamthif_cl)
|
|
return mei_amthif_poll(dev, file, wait);
|
|
|
|
poll_wait(file, &cl->tx_wait, wait);
|
|
|
|
mutex_lock(&dev->device_lock);
|
|
|
|
if (!mei_cl_is_connected(cl)) {
|
|
mask = POLLERR;
|
|
goto out;
|
|
}
|
|
|
|
mask |= (POLLIN | POLLRDNORM);
|
|
|
|
out:
|
|
mutex_unlock(&dev->device_lock);
|
|
return mask;
|
|
}
|
|
|
|
/**
|
|
* fw_status_show - mei device attribute show method
|
|
*
|
|
* @device: device pointer
|
|
* @attr: attribute pointer
|
|
* @buf: char out buffer
|
|
*
|
|
* Return: number of the bytes printed into buf or error
|
|
*/
|
|
static ssize_t fw_status_show(struct device *device,
|
|
struct device_attribute *attr, char *buf)
|
|
{
|
|
struct mei_device *dev = dev_get_drvdata(device);
|
|
struct mei_fw_status fw_status;
|
|
int err, i;
|
|
ssize_t cnt = 0;
|
|
|
|
mutex_lock(&dev->device_lock);
|
|
err = mei_fw_status(dev, &fw_status);
|
|
mutex_unlock(&dev->device_lock);
|
|
if (err) {
|
|
dev_err(device, "read fw_status error = %d\n", err);
|
|
return err;
|
|
}
|
|
|
|
for (i = 0; i < fw_status.count; i++)
|
|
cnt += scnprintf(buf + cnt, PAGE_SIZE - cnt, "%08X\n",
|
|
fw_status.status[i]);
|
|
return cnt;
|
|
}
|
|
static DEVICE_ATTR_RO(fw_status);
|
|
|
|
static struct attribute *mei_attrs[] = {
|
|
&dev_attr_fw_status.attr,
|
|
NULL
|
|
};
|
|
ATTRIBUTE_GROUPS(mei);
|
|
|
|
/*
|
|
* file operations structure will be used for mei char device.
|
|
*/
|
|
static const struct file_operations mei_fops = {
|
|
.owner = THIS_MODULE,
|
|
.read = mei_read,
|
|
.unlocked_ioctl = mei_ioctl,
|
|
#ifdef CONFIG_COMPAT
|
|
.compat_ioctl = mei_compat_ioctl,
|
|
#endif
|
|
.open = mei_open,
|
|
.release = mei_release,
|
|
.write = mei_write,
|
|
.poll = mei_poll,
|
|
.llseek = no_llseek
|
|
};
|
|
|
|
static struct class *mei_class;
|
|
static dev_t mei_devt;
|
|
#define MEI_MAX_DEVS MINORMASK
|
|
static DEFINE_MUTEX(mei_minor_lock);
|
|
static DEFINE_IDR(mei_idr);
|
|
|
|
/**
|
|
* mei_minor_get - obtain next free device minor number
|
|
*
|
|
* @dev: device pointer
|
|
*
|
|
* Return: allocated minor, or -ENOSPC if no free minor left
|
|
*/
|
|
static int mei_minor_get(struct mei_device *dev)
|
|
{
|
|
int ret;
|
|
|
|
mutex_lock(&mei_minor_lock);
|
|
ret = idr_alloc(&mei_idr, dev, 0, MEI_MAX_DEVS, GFP_KERNEL);
|
|
if (ret >= 0)
|
|
dev->minor = ret;
|
|
else if (ret == -ENOSPC)
|
|
dev_err(dev->dev, "too many mei devices\n");
|
|
|
|
mutex_unlock(&mei_minor_lock);
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* mei_minor_free - mark device minor number as free
|
|
*
|
|
* @dev: device pointer
|
|
*/
|
|
static void mei_minor_free(struct mei_device *dev)
|
|
{
|
|
mutex_lock(&mei_minor_lock);
|
|
idr_remove(&mei_idr, dev->minor);
|
|
mutex_unlock(&mei_minor_lock);
|
|
}
|
|
|
|
int mei_register(struct mei_device *dev, struct device *parent)
|
|
{
|
|
struct device *clsdev; /* class device */
|
|
int ret, devno;
|
|
|
|
ret = mei_minor_get(dev);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
/* Fill in the data structures */
|
|
devno = MKDEV(MAJOR(mei_devt), dev->minor);
|
|
cdev_init(&dev->cdev, &mei_fops);
|
|
dev->cdev.owner = mei_fops.owner;
|
|
|
|
/* Add the device */
|
|
ret = cdev_add(&dev->cdev, devno, 1);
|
|
if (ret) {
|
|
dev_err(parent, "unable to add device %d:%d\n",
|
|
MAJOR(mei_devt), dev->minor);
|
|
goto err_dev_add;
|
|
}
|
|
|
|
clsdev = device_create_with_groups(mei_class, parent, devno,
|
|
dev, mei_groups,
|
|
"mei%d", dev->minor);
|
|
|
|
if (IS_ERR(clsdev)) {
|
|
dev_err(parent, "unable to create device %d:%d\n",
|
|
MAJOR(mei_devt), dev->minor);
|
|
ret = PTR_ERR(clsdev);
|
|
goto err_dev_create;
|
|
}
|
|
|
|
ret = mei_dbgfs_register(dev, dev_name(clsdev));
|
|
if (ret) {
|
|
dev_err(clsdev, "cannot register debugfs ret = %d\n", ret);
|
|
goto err_dev_dbgfs;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_dev_dbgfs:
|
|
device_destroy(mei_class, devno);
|
|
err_dev_create:
|
|
cdev_del(&dev->cdev);
|
|
err_dev_add:
|
|
mei_minor_free(dev);
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mei_register);
|
|
|
|
void mei_deregister(struct mei_device *dev)
|
|
{
|
|
int devno;
|
|
|
|
devno = dev->cdev.dev;
|
|
cdev_del(&dev->cdev);
|
|
|
|
mei_dbgfs_deregister(dev);
|
|
|
|
device_destroy(mei_class, devno);
|
|
|
|
mei_minor_free(dev);
|
|
}
|
|
EXPORT_SYMBOL_GPL(mei_deregister);
|
|
|
|
static int __init mei_init(void)
|
|
{
|
|
int ret;
|
|
|
|
mei_class = class_create(THIS_MODULE, "mei");
|
|
if (IS_ERR(mei_class)) {
|
|
pr_err("couldn't create class\n");
|
|
ret = PTR_ERR(mei_class);
|
|
goto err;
|
|
}
|
|
|
|
ret = alloc_chrdev_region(&mei_devt, 0, MEI_MAX_DEVS, "mei");
|
|
if (ret < 0) {
|
|
pr_err("unable to allocate char dev region\n");
|
|
goto err_class;
|
|
}
|
|
|
|
ret = mei_cl_bus_init();
|
|
if (ret < 0) {
|
|
pr_err("unable to initialize bus\n");
|
|
goto err_chrdev;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_chrdev:
|
|
unregister_chrdev_region(mei_devt, MEI_MAX_DEVS);
|
|
err_class:
|
|
class_destroy(mei_class);
|
|
err:
|
|
return ret;
|
|
}
|
|
|
|
static void __exit mei_exit(void)
|
|
{
|
|
unregister_chrdev_region(mei_devt, MEI_MAX_DEVS);
|
|
class_destroy(mei_class);
|
|
mei_cl_bus_exit();
|
|
}
|
|
|
|
module_init(mei_init);
|
|
module_exit(mei_exit);
|
|
|
|
MODULE_AUTHOR("Intel Corporation");
|
|
MODULE_DESCRIPTION("Intel(R) Management Engine Interface");
|
|
MODULE_LICENSE("GPL v2");
|
|
|