Walk the list of adapters and exit with the smallest unused bus number.
Feeling lucky? No 2.6 here yet.
--- linux-2.6.0-test10/drivers/i2c/i2c-core.c 2003-11-24 13:33:19.000000000 +0200
+++ i2c-drv-model/i2c-core-bus-number.c 2003-11-30 07:10:36.000000000 +0200
@@ -122,13 +122,25 @@
*/
int i2c_add_adapter(struct i2c_adapter *adap)
{
- static int nr = 0;
+ int used, nr;
struct list_head *item;
struct i2c_driver *driver;
+ struct i2c_adapter *adapter;
down(&core_lists);
- adap->nr = nr++;
+ for (nr=0, used=1; used ; nr++) {
+ used = 0;
+ list_for_each(item,&adapters) {
+ adapter = list_entry(item, struct i2c_adapter, list);
+ if (nr == adapter->nr) {
+ used = 1;
+ break;
+ }
+ }
+ }
+ adap->nr = nr;
+
init_MUTEX(&adap->bus_lock);
init_MUTEX(&adap->clist_lock);
list_add_tail(&adap->list,&adapters);
--
Ky?sti M?lkki <kyosti.malkki at welho.com> +358 50 462 8786
