diff options
Diffstat (limited to 'drivers/staging/comedi/comedi_fops.c')
| -rw-r--r-- | drivers/staging/comedi/comedi_fops.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 2fd577fa941e..cd2c7d40d4db 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -1648,6 +1648,7 @@ static long comedi_unlocked_ioctl(struct file *file, unsigned int cmd, { const unsigned minor = iminor(file->f_dentry->d_inode); struct comedi_device *dev = comedi_dev_from_minor(minor); + struct comedi_file_info *info = comedi_file_info_from_minor(minor); int rc; if (!dev) @@ -1660,6 +1661,9 @@ static long comedi_unlocked_ioctl(struct file *file, unsigned int cmd, if (cmd == COMEDI_DEVCONFIG) { rc = do_devconfig_ioctl(dev, (struct comedi_devconfig __user *)arg); + if (rc == 0) + /* Evade comedi_auto_unconfig(). */ + info->hardware_device = NULL; goto done; } |