From 2d65599ad1e4f195bbb80752cd5cbc2f1a018dba Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Thu, 13 Apr 2023 19:10:21 -0700 Subject: [PATCH] i2c: cadence: cdns_i2c_master_xfer(): Fix runtime PM leak on error path [ 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 Reviewed-by: Michal Simek Signed-off-by: Wolfram Sang Signed-off-by: Sasha Levin --- 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 33f5588a50c0..5ea92dc97f0c 100644 --- a/drivers/i2c/busses/i2c-cadence.c +++ b/drivers/i2c/busses/i2c-cadence.c @@ -828,8 +828,10 @@ 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);