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Reserve 4 adapter numbers for each DVB-C modulators

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In order to determine on which tab/port modules are plugged, udev
relies on adapter numbers which must remain multiple of 4.
This commit is contained in:
Florent Audebert 2015-05-13 17:51:23 +02:00 committed by Richard Bérichon
parent 53dc0b8905
commit 5ae225b1f6
3 changed files with 17 additions and 8 deletions
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15
ddbridge/ddbridge-core.c
View File

@ -1564,7 +1564,8 @@ static int dvb_register_adapters(struct ddb *dev)
adap = port->dvb[0].adap;
ret = dvb_register_adapter(adap, "DDBridge", THIS_MODULE,
port->dev->dev,
adapter_nr);
adapter_nr,
dev->link[0].info->type == DDB_MOD ? 4 : 1);
if (ret < 0)
return ret;
port->dvb[0].adap_registered = 1;
@ -1584,7 +1585,8 @@ static int dvb_register_adapters(struct ddb *dev)
ret = dvb_register_adapter(adap, "DDBridge",
THIS_MODULE,
port->dev->dev,
adapter_nr);
adapter_nr,
1);
if (ret < 0)
return ret;
port->dvb[0].adap_registered = 1;
@ -1597,7 +1599,8 @@ static int dvb_register_adapters(struct ddb *dev)
ret = dvb_register_adapter(adap, "DDBridge",
THIS_MODULE,
port->dev->dev,
adapter_nr);
adapter_nr,
1);
if (ret < 0)
return ret;
port->dvb[1].adap_registered = 1;
@ -1609,7 +1612,8 @@ static int dvb_register_adapters(struct ddb *dev)
ret = dvb_register_adapter(adap, "DDBridge",
THIS_MODULE,
port->dev->dev,
adapter_nr);
adapter_nr,
1);
if (ret < 0)
return ret;
port->dvb[0].adap_registered = 1;
@ -1621,7 +1625,8 @@ static int dvb_register_adapters(struct ddb *dev)
ret = dvb_register_adapter(adap, "DDBridge",
THIS_MODULE,
port->dev->dev,
adapter_nr);
adapter_nr,
1);
if (ret < 0)
return ret;
port->dvb[0].adap_registered = 1;

6
dvb-core/dvbdev.c
View File

@ -780,9 +780,10 @@ static int dvbdev_check_free_adapter_num(int num)
list_for_each(entry, &dvb_adapter_list) {
struct dvb_adapter *adap;
adap = list_entry(entry, struct dvb_adapter, list_head);
if (adap->num == num)
if (num >= adap->num && num < adap->num + adap->num_reserved)
return 0;
}
return 1;
}
@ -802,7 +803,7 @@ static int dvbdev_get_free_adapter_num (void)
int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
struct module *module, struct device *device,
short *adapter_nums)
short *adapter_nums, int num_reserved)
{
int i, num;
@ -837,6 +838,7 @@ int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
adap->device = device;
adap->mfe_shared = 0;
adap->mfe_dvbdev = NULL;
adap->num_reserved = num_reserved;
mutex_init (&adap->mfe_lock);
list_add_tail (&adap->list_head, &dvb_adapter_list);

4
dvb-core/dvbdev.h
View File

@ -95,6 +95,8 @@ struct dvb_adapter {
struct dvb_device *mfe_dvbdev; /* frontend device in use */
struct mutex mfe_lock; /* access lock for thread creation */
int num_reserved;
#if defined(CONFIG_MEDIA_CONTROLLER_DVB)
struct media_device *mdev;
struct media_entity *conn;
@ -181,7 +183,7 @@ struct dvb_device {
*/
int dvb_register_adapter(struct dvb_adapter *adap, const char *name,
struct module *module, struct device *device,
short *adapter_nums);
short *adapter_nums, int num_reserved);
/**
* dvb_unregister_adapter - Unregisters a DVB adapter