From: Vadim Pasternak Date: Fri, 26 Jan 2018 19:03:45 +0000 (+0000) Subject: platform/mellanox: mlxreg-hotplug: Add check for negative adapter number X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7805fa8d78d0ea8c9c5a6603960e8f23901c7f17;p=linux.git platform/mellanox: mlxreg-hotplug: Add check for negative adapter number 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 Signed-off-by: Darren Hart (VMware) --- diff --git a/drivers/platform/mellanox/mlxreg-hotplug.c b/drivers/platform/mellanox/mlxreg-hotplug.c index bcb564fd9f046..0dfa1ca0d05b0 100644 --- a/drivers/platform/mellanox/mlxreg-hotplug.c +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -96,6 +96,13 @@ 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. 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",