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| author | Ziyang Xuan <william.xuanziyang@huawei.com> | 2021-10-13 11:49:32 +0800 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2021-10-13 17:32:38 -0700 |
| commit | 0911ab31896f0e908540746414a77dd63912748d (patch) | |
| tree | 84f7711856e1b7b588da69295d172aa0897cc24b | |
| parent | 1f922d9e374f0ca7d1b241666c792f403c6120aa (diff) | |
| download | lwn-0911ab31896f0e908540746414a77dd63912748d.tar.gz lwn-0911ab31896f0e908540746414a77dd63912748d.zip | |
nfc: fix error handling of nfc_proto_register()
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.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | net/nfc/af_nfc.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/net/nfc/af_nfc.c b/net/nfc/af_nfc.c index 6024fad905ff..dda323e0a473 100644 --- a/net/nfc/af_nfc.c +++ b/net/nfc/af_nfc.c @@ -60,6 +60,9 @@ int nfc_proto_register(const struct nfc_protocol *nfc_proto) 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); |