Unknown symbol platform_device_put 问题

 

写驱动遇到的问题

[15549.220492] platdevice: Unknown symbol platform_device_put (err 0)

[15549.224237] platdevice: Unknown symbol platform_device_unregister (err 0)

[15549.224315] platdevice: Unknown symbol platform_device_add (err 0)

[15549.224982] platdevice: Unknown symbol platform_device_alloc (err 0)

[15715.445864] platdevice: Unknown symbol platform_device_put (err 0)

[15715.445942] platdevice: Unknown symbol platform_device_unregister (err 0)

[15715.446018] platdevice: Unknown symbol platform_device_add (err 0)

[15715.446092] platdevice: Unknown symbol platform_device_alloc (err 0)

 

解决：

缺少

MODULE_AUTHOR("hacktao");

MODULE_LICENSE("Dual BSD/GPL");