From: Wolfram Sang wsa+renesas@sang-engineering.com
[ Upstream commit 1b1be3bf27b62f5abcf85c6f3214bdb9c7526685 ]
Add check for ERR_PTR and simplify code while here.
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 --- drivers/i2c/i2c-core-slave.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/i2c/i2c-core-slave.c b/drivers/i2c/i2c-core-slave.c index 4a78c65e99713..21051aba39e3a 100644 --- a/drivers/i2c/i2c-core-slave.c +++ b/drivers/i2c/i2c-core-slave.c @@ -22,10 +22,8 @@ int i2c_slave_register(struct i2c_client *client, i2c_slave_cb_t slave_cb) { int ret;
- if (!client || !slave_cb) { - WARN(1, "insufficient data\n"); + if (WARN(IS_ERR_OR_NULL(client) || !slave_cb, "insufficient data\n")) return -EINVAL; - }
if (!(client->flags & I2C_CLIENT_SLAVE)) dev_warn(&client->dev, "%s: client slave flag not set. You might see address collisions\n",