diff options
| -rw-r--r-- | drivers/net/netdevsim/bus.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/net/netdevsim/bus.c b/drivers/net/netdevsim/bus.c index 5b5a9b0831a9..c50c5ea90555 100644 --- a/drivers/net/netdevsim/bus.c +++ b/drivers/net/netdevsim/bus.c @@ -4,6 +4,7 @@ */ #include <linux/device.h> +#include <linux/idr.h> #include <linux/kernel.h> #include <linux/rtnetlink.h> #include <linux/slab.h> @@ -11,7 +12,7 @@ #include "netdevsim.h" -static u32 nsim_bus_dev_id; +static DEFINE_IDA(nsim_bus_dev_ids); static struct nsim_bus_dev *to_nsim_bus_dev(struct device *dev) { @@ -134,14 +135,19 @@ struct nsim_bus_dev *nsim_bus_dev_new(void) if (!nsim_bus_dev) return ERR_PTR(-ENOMEM); - nsim_bus_dev->dev.id = nsim_bus_dev_id++; + err = ida_alloc(&nsim_bus_dev_ids, GFP_KERNEL); + if (err < 0) + goto err_nsim_bus_dev_free; + nsim_bus_dev->dev.id = err; nsim_bus_dev->dev.bus = &nsim_bus; nsim_bus_dev->dev.type = &nsim_bus_dev_type; err = device_register(&nsim_bus_dev->dev); if (err) - goto err_nsim_bus_dev_free; + goto err_nsim_bus_dev_id_free; return nsim_bus_dev; +err_nsim_bus_dev_id_free: + ida_free(&nsim_bus_dev_ids, nsim_bus_dev->dev.id); err_nsim_bus_dev_free: kfree(nsim_bus_dev); return ERR_PTR(err); @@ -150,6 +156,7 @@ err_nsim_bus_dev_free: void nsim_bus_dev_del(struct nsim_bus_dev *nsim_bus_dev) { device_unregister(&nsim_bus_dev->dev); + ida_free(&nsim_bus_dev_ids, nsim_bus_dev->dev.id); kfree(nsim_bus_dev); } |