From: Lars-Peter Clausen lars@metafoo.de
[ Upstream commit ae1664f04f504a998737f5bb563f16b44357bcca ]
The cdns_i2c_master_xfer() function gets a runtime PM reference when the function is entered. This reference is released when the function is exited. There is currently one error path where the function exits directly, which leads to a leak of the runtime PM reference.
Make sure that this error path also releases the runtime PM reference.
Fixes: 1a351b10b967 ("i2c: cadence: Added slave support") Signed-off-by: Lars-Peter Clausen lars@metafoo.de Reviewed-by: Michal Simek michal.simek@amd.com Signed-off-by: Wolfram Sang wsa@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/i2c/busses/i2c-cadence.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/busses/i2c-cadence.c b/drivers/i2c/busses/i2c-cadence.c index b5d22e7282c22..982c207d473b7 100644 --- a/drivers/i2c/busses/i2c-cadence.c +++ b/drivers/i2c/busses/i2c-cadence.c @@ -827,8 +827,10 @@ static int cdns_i2c_master_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, #if IS_ENABLED(CONFIG_I2C_SLAVE) /* Check i2c operating mode and switch if possible */ if (id->dev_mode == CDNS_I2C_MODE_SLAVE) { - if (id->slave_state != CDNS_I2C_SLAVE_STATE_IDLE) - return -EAGAIN; + if (id->slave_state != CDNS_I2C_SLAVE_STATE_IDLE) { + ret = -EAGAIN; + goto out; + }
/* Set mode to master */ cdns_i2c_set_mode(CDNS_I2C_MODE_MASTER, id);