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authorJanne Grunau <janne-dvb@grunau.be>2008-04-09 19:13:13 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2008-04-24 14:08:00 -0300
commit78e92006f410a4044f8c1760c25ac9d11d259aa2 (patch)
tree293de8abe261420df2db5e12936ec2721ea52c7c /drivers/media/dvb/bt8xx
parent9950c1b5b4b86d4aae12853c2f0a0ef11d976764 (diff)
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>
Diffstat (limited to 'drivers/media/dvb/bt8xx')
-rw-r--r--drivers/media/dvb/bt8xx/dvb-bt8xx.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/media/dvb/bt8xx/dvb-bt8xx.c b/drivers/media/dvb/bt8xx/dvb-bt8xx.c
index a39439b5f04c..6afbfbbef0ce 100644
--- a/drivers/media/dvb/bt8xx/dvb-bt8xx.c
+++ b/drivers/media/dvb/bt8xx/dvb-bt8xx.c
@@ -40,6 +40,8 @@ static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Turn on/off debugging (default:off).");
+DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr);
+
#define dprintk( args... ) \
do { \
if (debug) printk(KERN_DEBUG args); \
@@ -717,7 +719,10 @@ static int __devinit dvb_bt8xx_load_card(struct dvb_bt8xx_card *card, u32 type)
{
int result;
- if ((result = dvb_register_adapter(&card->dvb_adapter, card->card_name, THIS_MODULE, &card->bt->dev->dev)) < 0) {
+ result = dvb_register_adapter(&card->dvb_adapter, card->card_name,
+ THIS_MODULE, &card->bt->dev->dev,
+ adapter_nr);
+ if (result < 0) {
printk("dvb_bt8xx: dvb_register_adapter failed (errno = %d)\n", result);
return result;
}