int (*hotplug)(struct class_device *dev, char **envp, int num_envp, char *buffer, int buffer_size))
{
if ((cs == NULL) || (IS_ERR(cs)))
int (*hotplug)(struct class_device *dev, char **envp, int num_envp, char *buffer, int buffer_size))
{
if ((cs == NULL) || (IS_ERR(cs)))