V4L/DVB (7538): Adds selectable adapter numbers as per module option
The adapter_nr module options can be used to allocate static adapter
numbers on a driver level. It avoids problems with changing DVB apapter
numbers after warm/cold boot or device unplugging and repluging.
Each driver holds DVB_MAX_ADAPTER long array of the preferred order of
adapter numbers.
options dvb-usb-dib0700 adapter_nr=7,6,5,4,3,2,1,0 would result in a
reversed allocation of adapter numbers.
With adapter_nr=2,5 it tries first to get adapter number 2 and 5. If
both are already in use it will allocate the lowest free adapter number.
Signed-off-by: Janne Grunau <janne-dvb@grunau.be>
Acked-by: Hermann Pitton <hermann.pitton@arcor.de>
Signed-off-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
diff --git a/drivers/media/dvb/dvb-usb/dvb-usb-init.c b/drivers/media/dvb/dvb-usb/dvb-usb-init.c
index cdd717c..e331db8 100644
--- a/drivers/media/dvb/dvb-usb/dvb-usb-init.c
+++ b/drivers/media/dvb/dvb-usb/dvb-usb-init.c
@@ -26,7 +26,7 @@
module_param_named(force_pid_filter_usage, dvb_usb_force_pid_filter_usage, int, 0444);
MODULE_PARM_DESC(force_pid_filter_usage, "force all dvb-usb-devices to use a PID filter, if any (default: 0).");
-static int dvb_usb_adapter_init(struct dvb_usb_device *d)
+static int dvb_usb_adapter_init(struct dvb_usb_device *d, short *adapter_nrs)
{
struct dvb_usb_adapter *adap;
int ret,n;
@@ -72,7 +72,7 @@
}
if ((ret = dvb_usb_adapter_stream_init(adap)) ||
- (ret = dvb_usb_adapter_dvb_init(adap)) ||
+ (ret = dvb_usb_adapter_dvb_init(adap, adapter_nrs)) ||
(ret = dvb_usb_adapter_frontend_init(adap))) {
return ret;
}
@@ -122,7 +122,7 @@
return 0;
}
-static int dvb_usb_init(struct dvb_usb_device *d)
+static int dvb_usb_init(struct dvb_usb_device *d, short *adapter_nums)
{
int ret = 0;
@@ -143,7 +143,7 @@
dvb_usb_device_power_ctrl(d, 1);
if ((ret = dvb_usb_i2c_init(d)) ||
- (ret = dvb_usb_adapter_init(d))) {
+ (ret = dvb_usb_adapter_init(d, adapter_nums))) {
dvb_usb_exit(d);
return ret;
}
@@ -213,8 +213,10 @@
/*
* USB
*/
-int dvb_usb_device_init(struct usb_interface *intf, struct dvb_usb_device_properties
- *props, struct module *owner,struct dvb_usb_device **du)
+int dvb_usb_device_init(struct usb_interface *intf,
+ struct dvb_usb_device_properties *props,
+ struct module *owner, struct dvb_usb_device **du,
+ short *adapter_nums)
{
struct usb_device *udev = interface_to_usbdev(intf);
struct dvb_usb_device *d = NULL;
@@ -254,7 +256,7 @@
if (du != NULL)
*du = d;
- ret = dvb_usb_init(d);
+ ret = dvb_usb_init(d, adapter_nums);
if (ret == 0)
info("%s successfully initialized and connected.",desc->name);