diff options
Diffstat (limited to 'drivers/rpmsg/rpmsg_char.c')
| -rw-r--r-- | drivers/rpmsg/rpmsg_char.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c index 95a65f7a9d8d..2bebc9b2d163 100644 --- a/drivers/rpmsg/rpmsg_char.c +++ b/drivers/rpmsg/rpmsg_char.c @@ -127,6 +127,9 @@ static int rpmsg_eptdev_open(struct inode *inode, struct file *filp) struct rpmsg_device *rpdev = eptdev->rpdev; struct device *dev = &eptdev->dev; + if (eptdev->ept) + return -EBUSY; + get_device(dev); ept = rpmsg_create_ept(rpdev, rpmsg_ept_cb, eptdev, eptdev->chinfo); |