diff options
| author | Levente Kurusa <levex@linux.com> | 2015-05-14 01:02:16 +0000 |
|---|---|---|
| committer | Johannes Weiner <hannes@cmpxchg.org> | 2015-05-14 01:02:16 +0000 |
| commit | db25704aad1b8e40146945fb0bb5601d3d6a2172 (patch) | |
| tree | aa38f27323e715ece127d299d25ba0a61bec8a25 | |
| parent | 4c99bbf448eba5ba961b3dbc086daf8d9dd466aa (diff) | |
| download | mm-next-db25704aad1b8e40146945fb0bb5601d3d6a2172.tar.gz | |
drivers/w1/w1_int.c: call put_device if device_register fails
Currently, memsetting and kfreeing the device is bad behaviour. The
device will have a reference count of 1 and hence can cause trouble
because it has kfree'd. Proper way to handle a failed device_register is
to call put_device right after it fails.
Signed-off-by: Levente Kurusa <levex@linux.com>
Acked-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | drivers/w1/w1_int.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/w1/w1_int.c b/drivers/w1/w1_int.c index 47249a30eae38e..20f766afa4c7d7 100644 --- a/drivers/w1/w1_int.c +++ b/drivers/w1/w1_int.c @@ -91,8 +91,7 @@ static struct w1_master *w1_alloc_dev(u32 id, int slave_count, int slave_ttl, err = device_register(&dev->dev); if (err) { pr_err("Failed to register master device. err=%d\n", err); - memset(dev, 0, sizeof(struct w1_master)); - kfree(dev); + put_device(&dev->dev); dev = NULL; } |