diff options
| author | Yuan Can <yuancan@huawei.com> | 2022-11-10 02:16:42 +0000 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-11-11 19:57:37 -0800 |
| commit | 8eab9be56cc6b702a445d2b6d0256aa0992316b3 (patch) | |
| tree | b59038cb69535936c42c584215de68c4ec91954e /drivers/net/ethernet/huawei/hinic | |
| parent | 98a2ac1ca8fd6eca6867726fe238d06e75eb1acd (diff) | |
net: hinic: Fix error handling in hinic_module_init()
A problem about hinic create debugfs failed is triggered with the
following log given:
[ 931.419023] debugfs: Directory 'hinic' with parent '/' already present!
The reason is that hinic_module_init() returns pci_register_driver()
directly without checking its return value, if pci_register_driver()
failed, it returns without destroy the newly created debugfs, resulting
the debugfs of hinic can never be created later.
hinic_module_init()
hinic_dbg_register_debugfs() # create debugfs directory
pci_register_driver()
driver_register()
bus_add_driver()
priv = kzalloc(...) # OOM happened
# return without destroy debugfs directory
Fix by removing debugfs when pci_register_driver() returns error.
Fixes: 253ac3a97921 ("hinic: add support to query sq info")
Signed-off-by: Yuan Can <yuancan@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Link: https://lore.kernel.org/r/20221110021642.80378-1-yuancan@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/huawei/hinic')
| -rw-r--r-- | drivers/net/ethernet/huawei/hinic/hinic_main.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c index e1f54a2f28b2..2d6906aba2a2 100644 --- a/drivers/net/ethernet/huawei/hinic/hinic_main.c +++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c @@ -1474,8 +1474,15 @@ static struct pci_driver hinic_driver = { static int __init hinic_module_init(void) { + int ret; + hinic_dbg_register_debugfs(HINIC_DRV_NAME); - return pci_register_driver(&hinic_driver); + + ret = pci_register_driver(&hinic_driver); + if (ret) + hinic_dbg_unregister_debugfs(); + + return ret; } static void __exit hinic_module_exit(void) |