Verify before creation of hotplug device if the associated adapter number is negative. It could be in case hotplug event is not associated with hotplug device.
Signed-off-by: Vadim Pasternak <[email protected]> --- v10->v9: Fixes added by Vadim: - add this patch to the series; --- drivers/platform/mellanox/mlxreg-hotplug.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c index f841379..b0d7587 100644 --- a/drivers/platform/mellanox/mlxreg-hotplug.c +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -96,6 +96,14 @@ struct mlxreg_hotplug_priv_data { static int mlxreg_hotplug_device_create(struct device *dev, struct mlxreg_core_data *data) { + /* + * Return if adapter number is negative. Return if adapter number is + * negative. It could be in case hotplug event is not associated with + * hotplug device. + */ + if (data->hpdev.nr < 0) + return 0; + data->hpdev.adapter = i2c_get_adapter(data->hpdev.nr); if (!data->hpdev.adapter) { dev_err(dev, "Failed to get adapter for bus %d\n", -- 2.1.4
