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Commit 69b3a13f authored by Ziyang Xuan's avatar Ziyang Xuan Committed by Greg Kroah-Hartman
Browse files

nfc: fix error handling of nfc_proto_register() 



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: c7fe3b52 ("NFC: add NFC socket family")
Signed-off-by: default avatarZiyang Xuan <william.xuanziyang@huawei.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20211013034932.2833737-1-william.xuanziyang@huawei.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 2731eaac

net/nfc/af_nfc.c

+3 −0
Original line number Diff line number Diff line
@@ -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);