/**
* Module exit function.
*/
static void __exit mpq_dmx_tsif_plugin_exit(void)
{
int i;
struct tsif_driver_info *tsif_driver;
MPQ_DVB_DBG_PRINT("%s executed\n", __func__);
for (i = 0; i < TSIF_COUNT; i++) {
mutex_lock(&mpq_dmx_tsif_info.tsif[i].mutex);
tsif_driver = &(mpq_dmx_tsif_info.tsif[i].tsif_driver);
if (mpq_dmx_tsif_info.tsif[i].ref_count > 0) {
mpq_dmx_tsif_info.tsif[i].ref_count = 0;
if (tsif_driver->tsif_handler)
tsif_stop(tsif_driver->tsif_handler);
}
/* Detach from TSIF driver to avoid further notifications. */
if (tsif_driver->tsif_handler)
tsif_detach(tsif_driver->tsif_handler);
mutex_unlock(&mpq_dmx_tsif_info.tsif[i].mutex);
kthread_stop(mpq_dmx_tsif_info.tsif[i].thread);
mutex_destroy(&mpq_dmx_tsif_info.tsif[i].mutex);
}
mpq_dmx_plugin_exit();
}
static void tsif_exit_one(struct tsif_chrdev *the_dev)
{
dev_info(the_dev->dev, "%s\n", __func__);
tsif_detach(the_dev->cookie);
device_destroy(tsif_class, the_dev->cdev.dev);
cdev_del(&the_dev->cdev);
}
/**
* Stop TSIF operation and detach from TSIF driver.
*
* @mpq_demux: the mpq_demux we are working on.
*
* Return error code.
*/
static int mpq_tsif_dmx_stop(struct mpq_demux *mpq_demux)
{
int tsif;
struct tsif_driver_info *tsif_driver;
MPQ_DVB_DBG_PRINT("%s executed\n", __func__);
/* determine the TSIF we are reading from */
if (mpq_demux->source == DMX_SOURCE_FRONT0) {
tsif = 0;
} else if (mpq_demux->source == DMX_SOURCE_FRONT1) {
tsif = 1;
} else {
/* invalid source */
MPQ_DVB_ERR_PRINT(
"%s: invalid input source (%d)\n",
__func__,
mpq_demux->source);
return -EINVAL;
}
if (mutex_lock_interruptible(&mpq_dmx_tsif_info.tsif[tsif].mutex))
return -ERESTARTSYS;
mpq_dmx_tsif_info.tsif[tsif].ref_count--;
if (mpq_dmx_tsif_info.tsif[tsif].ref_count == 0) {
tsif_driver = &(mpq_dmx_tsif_info.tsif[tsif].tsif_driver);
tsif_stop(tsif_driver->tsif_handler);
tsif_detach(tsif_driver->tsif_handler);
tsif_driver->tsif_handler = NULL;
tsif_driver->data_buffer = NULL;
tsif_driver->buffer_size = 0;
atomic_set(&mpq_dmx_tsif_info.tsif[tsif].data_cnt, 0);
mpq_dmx_tsif_info.tsif[tsif].mpq_demux = NULL;
}
mutex_unlock(&mpq_dmx_tsif_info.tsif[tsif].mutex);
return 0;
}
