/*
=====================rsz_release===========================
The Function is used to release the number of resources occupied
by the channel
*/
static int rsz_release(struct inode *inode, struct file *filp)
{
struct imp_logical_channel *rsz_conf_chan =
(struct imp_logical_channel *)filp->private_data;
/* Lock the channel */
mutex_lock(&(rsz_conf_chan->lock));
/* It will free all the input and output buffers */
imp_common_free_buffers(rsz_device, rsz_conf_chan);
if (rsz_conf_chan->config_state == STATE_CONFIGURED) {
if (!rsz_conf_chan->chained) {
imp_hw_if->dealloc_config_block(rsz_device,
rsz_conf_chan->config);
}
kfree(rsz_conf_chan->user_config);
}
mutex_unlock(&(rsz_conf_chan->lock));
mutex_lock(&rsz_dev.lock);
rsz_dev.users--;
kfree(filp->private_data);
filp->private_data = NULL;
mutex_unlock(&rsz_dev.lock);
return 0;
} /* End of function resizer_release */
int previewer_release(struct inode *inode, struct file *filp)
{
/* get the configuratin from private_date member of file */
struct prev_fh *fh;
struct imp_logical_channel *chan;
struct prev_device *device = &prevdevice;
unsigned int state;
unsigned int mode;
dev_dbg(prev_dev, __func__ "E\n");
mutex_lock(&device->lock);
fh = (struct prev_fh *)filp->private_data;
chan = fh->chan;
/* if hw is busy in continuous mode, and this is primary
user, we can not close the device
*/
state = imp_hw_if->get_hw_state();
mode = imp_hw_if->get_preview_oper_mode();
if ((device->users != 1) && (fh->primary_user)) {
dev_err(prev_dev,
"Close other instances before"
" this primary user instance\n");
mutex_unlock(&device->lock);
return -EBUSY;
}
device->users--;
if (fh->primary_user) {
/* call free_buffers to free memory allocated to buffers */
imp_common_free_buffers(prev_dev, chan);
chan->primary_user = 0;
if (chan->config_state == STATE_CONFIGURED)
kfree(chan->user_config);
}
kfree(filp->private_data);
/* Assign null to private_data member of file and params
member of device */
filp->private_data = NULL;
mutex_unlock(&device->lock);
dev_dbg(prev_dev, __func__ "L\n");
return 0;
}
