Need of MODULE_LICENSE("GPL")

[Niroj Pokhrel]

Hi,
While writing a device driver, I noticed MODULE_LICENSE("GPL"). When I
omitted it, I got several error like device_create, device_destroy,
class_create, class_destroy is not recognized symbol. I am just wondering
what is the use of this macro and how does it helps in defining the
symbols. Thanks in advance.

-- 
Niroj Pokhrel
Software Engineer,
Samsung India Software Operations
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