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authorOliver Endriss <o.endriss@gmx.de>2011-01-10 09:36:23 (GMT)
committerMauro Carvalho Chehab <mchehab@redhat.com>2011-01-17 15:47:34 (GMT)
commit763d1eced7f5e172568a007717ef5163c05e7be7 (patch)
treeeb89c9901d7b7ca928ed443ef5c2c70ea2c6d69b
parenta4951f1182939a816c2e5981f59f91b60c3421d7 (diff)
[media] ngene: Improved channel initialisation and release
Refactored code for channel initialisation and release: - Do not create device nodes which are not required. - Better error handling. Signed-off-by: Oliver Endriss <o.endriss@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
-rw-r--r--drivers/media/dvb/ngene/ngene-core.c109
-rw-r--r--drivers/media/dvb/ngene/ngene.h2
2 files changed, 60 insertions, 51 deletions
diff --git a/drivers/media/dvb/ngene/ngene-core.c b/drivers/media/dvb/ngene/ngene-core.c
index a14b69c..175a0f6 100644
--- a/drivers/media/dvb/ngene/ngene-core.c
+++ b/drivers/media/dvb/ngene/ngene-core.c
@@ -1432,25 +1432,24 @@ static void release_channel(struct ngene_channel *chan)
{
struct dvb_demux *dvbdemux = &chan->demux;
struct ngene *dev = chan->dev;
- struct ngene_info *ni = dev->card_info;
- int io = ni->io_type[chan->number];
- if (chan->dev->cmd_timeout_workaround && chan->running)
+ if (chan->running)
set_transfer(chan, 0);
tasklet_kill(&chan->demux_tasklet);
- if (chan->number >= 2 && chan->number <= 3 && dev->ci.en)
- return;
+ if (chan->ci_dev) {
+ dvb_unregister_device(chan->ci_dev);
+ chan->ci_dev = NULL;
+ }
- if (io & (NGENE_IO_TSIN | NGENE_IO_TSOUT)) {
- if (chan->ci_dev)
- dvb_unregister_device(chan->ci_dev);
- if (chan->fe) {
- dvb_unregister_frontend(chan->fe);
- dvb_frontend_detach(chan->fe);
- chan->fe = NULL;
- }
+ if (chan->fe) {
+ dvb_unregister_frontend(chan->fe);
+ dvb_frontend_detach(chan->fe);
+ chan->fe = NULL;
+ }
+
+ if (chan->has_demux) {
dvb_net_release(&chan->dvbnet);
dvbdemux->dmx.close(&dvbdemux->dmx);
dvbdemux->dmx.remove_frontend(&dvbdemux->dmx,
@@ -1459,9 +1458,12 @@ static void release_channel(struct ngene_channel *chan)
&chan->mem_frontend);
dvb_dmxdev_release(&chan->dmxdev);
dvb_dmx_release(&chan->demux);
+ chan->has_demux = false;
+ }
- if (chan->number == 0 || !one_adapter)
- dvb_unregister_adapter(&dev->adapter[chan->number]);
+ if (chan->has_adapter) {
+ dvb_unregister_adapter(&dev->adapter[chan->number]);
+ chan->has_adapter = false;
}
}
@@ -1479,12 +1481,27 @@ static int init_channel(struct ngene_channel *chan)
chan->type = io;
chan->mode = chan->type; /* for now only one mode */
+ if (io & NGENE_IO_TSIN) {
+ chan->fe = NULL;
+ if (ni->demod_attach[nr]) {
+ ret = ni->demod_attach[nr](chan);
+ if (ret < 0)
+ goto err;
+ }
+ if (chan->fe && ni->tuner_attach[nr]) {
+ ret = ni->tuner_attach[nr](chan);
+ if (ret < 0)
+ goto err;
+ }
+ }
+
+ if (!dev->ci.en && (io & NGENE_IO_TSOUT))
+ return 0;
+
if (io & (NGENE_IO_TSIN | NGENE_IO_TSOUT)) {
if (nr >= STREAM_AUDIOIN1)
chan->DataFormatFlags = DF_SWAP32;
- if (nr >= 2 && nr <= 3 && dev->ci.en)
- return 0;
if (nr == 0 || !one_adapter || dev->first_adapter == NULL) {
adapter = &dev->adapter[nr];
ret = dvb_register_adapter(adapter, "nGene",
@@ -1492,13 +1509,32 @@ static int init_channel(struct ngene_channel *chan)
&chan->dev->pci_dev->dev,
adapter_nr);
if (ret < 0)
- return ret;
+ goto err;
if (dev->first_adapter == NULL)
dev->first_adapter = adapter;
- } else {
+ chan->has_adapter = true;
+ } else
adapter = dev->first_adapter;
- }
+ }
+
+ if (dev->ci.en && (io & NGENE_IO_TSOUT)) {
+ dvb_ca_en50221_init(adapter, dev->ci.en, 0, 1);
+ set_transfer(chan, 1);
+ set_transfer(&chan->dev->channel[2], 1);
+ dvb_register_device(adapter, &chan->ci_dev,
+ &ngene_dvbdev_ci, (void *) chan,
+ DVB_DEVICE_SEC);
+ if (!chan->ci_dev)
+ goto err;
+ }
+ if (chan->fe) {
+ if (dvb_register_frontend(adapter, chan->fe) < 0)
+ goto err;
+ chan->has_demux = true;
+ }
+
+ if (chan->has_demux) {
ret = my_dvb_dmx_ts_card_init(dvbdemux, "SW demux",
ngene_start_feed,
ngene_stop_feed, chan);
@@ -1506,45 +1542,16 @@ static int init_channel(struct ngene_channel *chan)
&chan->hw_frontend,
&chan->mem_frontend, adapter);
ret = dvb_net_init(adapter, &chan->dvbnet, &chan->demux.dmx);
-
- if (dev->ci.en && (io&NGENE_IO_TSOUT)) {
- dvb_ca_en50221_init(adapter, dev->ci.en, 0, 1);
- set_transfer(chan, 1);
- set_transfer(&chan->dev->channel[2], 1);
-
- dvb_register_device(adapter, &chan->ci_dev,
- &ngene_dvbdev_ci, (void *) chan,
- DVB_DEVICE_SEC);
- }
}
- if (io & NGENE_IO_TSIN) {
- chan->fe = NULL;
- if (ni->demod_attach[nr]) {
- ret = ni->demod_attach[nr](chan);
- if (ret < 0)
- goto err_fe;
- }
- if (chan->fe && ni->tuner_attach[nr]) {
- ret = ni->tuner_attach[nr](chan);
- if (ret < 0)
- goto err_fe;
- }
- if (chan->fe) {
- if (dvb_register_frontend(adapter, chan->fe) < 0)
- goto err_fe;
- }
- }
return ret;
-err_fe:
+err:
if (chan->fe) {
dvb_frontend_detach(chan->fe);
chan->fe = NULL;
}
-/* FIXME: this causes an oops... */
-/* release_channel(chan); */
-/* return ret; */
+ release_channel(chan);
return 0;
}
diff --git a/drivers/media/dvb/ngene/ngene.h b/drivers/media/dvb/ngene/ngene.h
index 5894abd..40fce9e 100644
--- a/drivers/media/dvb/ngene/ngene.h
+++ b/drivers/media/dvb/ngene/ngene.h
@@ -639,6 +639,8 @@ struct ngene_channel {
int number;
int type;
int mode;
+ bool has_adapter;
+ bool has_demux;
struct dvb_frontend *fe;
struct dmxdev dmxdev;

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