/*
* Default implementations of the character device interface
*/
int
CDev::open(struct file *filp)
{
int ret = OK;
lock();
/* increment the open count */
_open_count++;
if (_open_count == 1) {
/* first-open callback may decline the open */
ret = open_first(filp);
if (ret != OK)
_open_count--;
}
unlock();
return ret;
}
/*
* Default implementations of the character device interface
*/
int
VDev::open(file_t *filep)
{
PX4_DEBUG("VDev::open");
int ret = PX4_OK;
lock();
/* increment the open count */
_open_count++;
if (_open_count == 1) {
/* first-open callback may decline the open */
ret = open_first(filep);
if (ret != PX4_OK)
_open_count--;
}
unlock();
return ret;
}
