Messages in this thread Patch in this message |  | | From | Vadim Pasternak <> | | Subject | [patch v11 11/12] platform/mellanox: mlxreg-hotplug: Add check for negative adapter number value | | Date | Wed, 24 Jan 2018 20:34:57 +0000 |
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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 <vadimp@mellanox.com> --- 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 b891ec7..c806451 100644 --- a/drivers/platform/mellanox/mlxreg-hotplug.c +++ b/drivers/platform/mellanox/mlxreg-hotplug.c @@ -95,6 +95,14 @@ struct mlxreg_hotplug_priv_data { static int mlxreg_hotplug_device_create(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) return -EFAULT; -- 2.1.4
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