diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2021-04-09 14:01:57 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-14 09:44:22 +0200 |
| commit | d3b6b252bab0b3d556b96c3be5526319965515bc (patch) | |
| tree | d613a5538c5fdd9de02b3d7a95370513e0bc210e /drivers/base | |
| parent | 3f605558a4f7eadfe0b13964a670ec213d23e9dc (diff) | |
node: fix device cleanups in error handling code
[ Upstream commit 4ce535ec0084f0d712317cb99d383cad3288e713 ]
We can't use kfree() to free device managed resources so the kfree(dev)
is against the rules.
It's easier to write this code if we open code the device_register() as
a device_initialize() and device_add(). That way if dev_set_name() set
name fails we can call put_device() and it will clean up correctly.
Fixes: acc02a109b04 ("node: Add memory-side caching attributes")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/YHA0JUra+F64+NpB@mwanda
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/node.c | 26 |
1 files changed, 12 insertions, 14 deletions
diff --git a/drivers/base/node.c b/drivers/base/node.c index 9c6e6a7b9354..c9976dc4aa65 100644 --- a/drivers/base/node.c +++ b/drivers/base/node.c @@ -262,21 +262,20 @@ static void node_init_cache_dev(struct node *node) if (!dev) return; + device_initialize(dev); dev->parent = &node->dev; dev->release = node_cache_release; if (dev_set_name(dev, "memory_side_cache")) - goto free_dev; + goto put_device; - if (device_register(dev)) - goto free_name; + if (device_add(dev)) + goto put_device; pm_runtime_no_callbacks(dev); node->cache_dev = dev; return; -free_name: - kfree_const(dev->kobj.name); -free_dev: - kfree(dev); +put_device: + put_device(dev); } /** @@ -313,25 +312,24 @@ void node_add_cache(unsigned int nid, struct node_cache_attrs *cache_attrs) return; dev = &info->dev; + device_initialize(dev); dev->parent = node->cache_dev; dev->release = node_cacheinfo_release; dev->groups = cache_groups; if (dev_set_name(dev, "index%d", cache_attrs->level)) - goto free_cache; + goto put_device; info->cache_attrs = *cache_attrs; - if (device_register(dev)) { + if (device_add(dev)) { dev_warn(&node->dev, "failed to add cache level:%d\n", cache_attrs->level); - goto free_name; + goto put_device; } pm_runtime_no_callbacks(dev); list_add_tail(&info->node, &node->cache_attrs); return; -free_name: - kfree_const(dev->kobj.name); -free_cache: - kfree(info); +put_device: + put_device(dev); } static void node_remove_caches(struct node *node) |