diff options
Diffstat (limited to 'drivers/platform/mellanox')
| -rw-r--r-- | drivers/platform/mellanox/mlxreg-hotplug.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c index 313cf8ad77bf..fe4910bc0f96 100644 --- a/drivers/platform/mellanox/mlxreg-hotplug.c +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -550,6 +550,7 @@ static int mlxreg_hotplug_probe(struct platform_device *pdev) { struct mlxreg_core_hotplug_platform_data *pdata; struct mlxreg_hotplug_priv_data *priv; + struct i2c_adapter *deferred_adap; int err; pdata = dev_get_platdata(&pdev->dev); @@ -558,6 +559,12 @@ static int mlxreg_hotplug_probe(struct platform_device *pdev) return -EINVAL; } + /* Defer probing if the necessary adapter is not configured yet. */ + deferred_adap = i2c_get_adapter(pdata->deferred_nr); + if (!deferred_adap) + return -EPROBE_DEFER; + i2c_put_adapter(deferred_adap); + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) return -ENOMEM; |