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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");

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