diff options
| -rw-r--r-- | drivers/i2c/busses/i2c-designware-core.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/i2c/busses/i2c-designware-core.c b/drivers/i2c/busses/i2c-designware-core.c index 4255eaab96d1..99b54be6ba73 100644 --- a/drivers/i2c/busses/i2c-designware-core.c +++ b/drivers/i2c/busses/i2c-designware-core.c @@ -881,9 +881,17 @@ int i2c_dw_probe(struct dw_i2c_dev *dev) return r; } + /* + * Increment PM usage count during adapter registration in order to + * avoid possible spurious runtime suspend when adapter device is + * registered to the device core and immediate resume in case bus has + * registered I2C slaves that do I2C transfers in their probe. + */ + pm_runtime_get_noresume(dev->dev); r = i2c_add_numbered_adapter(adap); if (r) dev_err(dev->dev, "failure adding adapter: %d\n", r); + pm_runtime_put_noidle(dev->dev); return r; } |