/**
* mei_ioctl - the IOCTL function
*
* @file: pointer to file structure
* @cmd: ioctl command
* @data: pointer to mei message structure
*
* returns 0 on success , <0 on error
*/
static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
{
struct mei_device *dev;
struct mei_cl *cl = file->private_data;
struct mei_connect_client_data *connect_data = NULL;
int rets;
if (cmd != IOCTL_MEI_CONNECT_CLIENT)
return -EINVAL;
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
dev = cl->dev;
dev_dbg(&dev->pdev->dev, "IOCTL cmd = 0x%x", cmd);
mutex_lock(&dev->device_lock);
if (dev->dev_state != MEI_DEV_ENABLED) {
rets = -ENODEV;
goto out;
}
dev_dbg(&dev->pdev->dev, ": IOCTL_MEI_CONNECT_CLIENT.\n");
connect_data = kzalloc(sizeof(struct mei_connect_client_data),
GFP_KERNEL);
if (!connect_data) {
rets = -ENOMEM;
goto out;
}
dev_dbg(&dev->pdev->dev, "copy connect data from user\n");
if (copy_from_user(connect_data, (char __user *)data,
sizeof(struct mei_connect_client_data))) {
dev_dbg(&dev->pdev->dev, "failed to copy data from userland\n");
rets = -EFAULT;
goto out;
}
rets = mei_ioctl_connect_client(file, connect_data);
/* if all is ok, copying the data back to user. */
if (rets)
goto out;
dev_dbg(&dev->pdev->dev, "copy connect data to user\n");
if (copy_to_user((char __user *)data, connect_data,
sizeof(struct mei_connect_client_data))) {
dev_dbg(&dev->pdev->dev, "failed to copy data to userland\n");
rets = -EFAULT;
goto out;
}
out:
kfree(connect_data);
mutex_unlock(&dev->device_lock);
return rets;
}
/**
* mei_ioctl - the IOCTL function
*
* @file: pointer to file structure
* @cmd: ioctl command
* @data: pointer to mei message structure
*
* Return: 0 on success , <0 on error
*/
static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
{
struct mei_device *dev;
struct mei_cl *cl = file->private_data;
struct mei_connect_client_data connect_data;
int rets;
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
dev = cl->dev;
dev_dbg(dev->dev, "IOCTL cmd = 0x%x", cmd);
mutex_lock(&dev->device_lock);
if (dev->dev_state != MEI_DEV_ENABLED) {
rets = -ENODEV;
goto out;
}
switch (cmd) {
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_ioctl - the IOCTL function
*
* @file: pointer to file structure
* @cmd: ioctl command
* @data: pointer to mei message structure
*
* returns 0 on success , <0 on error
*/
static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
{
struct mei_device *dev;
struct mei_cl *cl = file->private_data;
struct mei_connect_client_data *connect_data = NULL;
int rets;
if (WARN_ON(!cl || !cl->dev))
return -ENODEV;
dev = cl->dev;
dev_dbg(&dev->pdev->dev, "IOCTL cmd = 0x%x", cmd);
mutex_lock(&dev->device_lock);
if (dev->dev_state != MEI_DEV_ENABLED) {
rets = -ENODEV;
goto out;
}
switch (cmd) {
case IOCTL_MEI_CONNECT_CLIENT:
dev_dbg(&dev->pdev->dev, ": IOCTL_MEI_CONNECT_CLIENT.\n");
connect_data = kzalloc(sizeof(struct mei_connect_client_data),
GFP_KERNEL);
if (!connect_data) {
rets = -ENOMEM;
goto out;
}
dev_dbg(&dev->pdev->dev, "copy connect data from user\n");
if (copy_from_user(connect_data, (char __user *)data,
sizeof(struct mei_connect_client_data))) {
dev_err(&dev->pdev->dev,
"failed to copy data from userland\n");
rets = -EFAULT;
goto out;
}
rets = mei_ioctl_connect_client(file, connect_data);
/* Error out if this failed */
if (rets) {
dev_err(&dev->pdev->dev,
"failed mei_ioctl_connect_client\n");
goto out;
}
/* if all is ok, copying the data back to user. */
dev_dbg(&dev->pdev->dev, "copy connect data to user\n");
if (copy_to_user((char __user *)data, connect_data,
sizeof(struct mei_connect_client_data))) {
dev_err(&dev->pdev->dev, "failed to copy data to userland\n");
rets = -EFAULT;
goto out;
}
break;
case IOCTL_MEI_SETUP_DMA_BUF:
dev_dbg(&dev->pdev->dev, ": IOCTL_MEI_SETUP_DMA_BUF\n");
rets = -EOPNOTSUPP;
break;
case IOCTL_MEI_UNSET_DMA_BUF:
dev_dbg(&dev->pdev->dev, ": IOCTL_MEI_UNSET_DMA_BUF\n");
rets = -EOPNOTSUPP;
break;
default:
dev_err(&dev->pdev->dev, ": unsupported ioctl %d.\n", cmd);
rets = -EINVAL;
break;
}
out:
kfree(connect_data);
mutex_unlock(&dev->device_lock);
return rets;
}
