Commit 871b5a5a authored Jul 25, 2020 by Wolfram Sang Committed by Greg Kroah-Hartman Aug 11, 2020

i2c: slave: add sanity check when unregistering



[ Upstream commit 8808981baf96e1b3dea1f08461e4d958aa0dbde1 ]

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Alain Volmat <alain.volmat@st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent fa0195d8

drivers/i2c/i2c-core-slave.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -58,6 +58,9 @@ int i2c_slave_unregister(struct i2c_client *client)
		{
		int ret;

		if (IS_ERR_OR_NULL(client))
		return -EINVAL;

		if (!client->adapter->algo->unreg_slave) {
		dev_err(&client->dev, "%s: not supported by adapter\n", __func__);
		return -EOPNOTSUPP;