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/ttusb2.c b/drivers/media/dvb/dvb-usb/ttusb2.c
index 0eb3337..706687c 100644
--- a/drivers/media/dvb/dvb-usb/ttusb2.c
+++ b/drivers/media/dvb/dvb-usb/ttusb2.c
@@ -37,6 +37,8 @@
module_param_named(debug,dvb_usb_ttusb2_debug, int, 0644);
MODULE_PARM_DESC(debug, "set debugging level (1=info (or-able))." DVB_USB_DEBUG_STATUS);
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
struct ttusb2_state {
u8 id;
};
@@ -181,8 +183,10 @@
static int ttusb2_probe(struct usb_interface *intf,
const struct usb_device_id *id)
{
- if (dvb_usb_device_init(intf, &ttusb2_properties, THIS_MODULE, NULL) == 0 ||
- dvb_usb_device_init(intf, &ttusb2_properties_s2400, THIS_MODULE, NULL) == 0)
+ if (0 == dvb_usb_device_init(intf, &ttusb2_properties,
+ THIS_MODULE, NULL, adapter_nr) ||
+ 0 == dvb_usb_device_init(intf, &ttusb2_properties_s2400,
+ THIS_MODULE, NULL, adapter_nr))
return 0;
return -ENODEV;
}