From: Ziyang Xuan william.xuanziyang@huawei.com
commit 0911ab31896f0e908540746414a77dd63912748d upstream.
When nfc proto id is using, nfc_proto_register() return -EBUSY error code, but forgot to unregister proto. Fix it by adding proto_unregister() in the error handling case.
Fixes: c7fe3b52c128 ("NFC: add NFC socket family") Signed-off-by: Ziyang Xuan william.xuanziyang@huawei.com Reviewed-by: Krzysztof Kozlowski krzysztof.kozlowski@canonical.com Link: https://lore.kernel.org/r/20211013034932.2833737-1-william.xuanziyang@huawei... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/nfc/af_nfc.c | 3 +++ 1 file changed, 3 insertions(+)
--- a/net/nfc/af_nfc.c +++ b/net/nfc/af_nfc.c @@ -60,6 +60,9 @@ int nfc_proto_register(const struct nfc_ proto_tab[nfc_proto->id] = nfc_proto; write_unlock(&proto_tab_lock);
+ if (rc) + proto_unregister(nfc_proto->proto); + return rc; } EXPORT_SYMBOL(nfc_proto_register);