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並前往https://kernelnewbies.kernelnewbies.narkive.com/mVt7KI1n/alloc-chrdev-region-creates-extra-major-numbers

alloc_chrdev_region creates extra major numbers

ret_val = alloc_chrdev_region(&dev, 0, 4, "fullex"); works as expected. $ cat /proc/devices. Character devices: 251 fullex 252 fullex 253 fullex 254 fullex

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查詢 「Alloc_chrdev_region」的人也找了：

  1. Alloc_chrdev_region
    2.
  2. Device_create
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  3. Class_create
    4.
  4. Register_chrdev_region
    5.
  5. Cdev_init
    6.
  6. Major number minor number
    7.
  7. File_operations read example
    8.
  8. Unregister_chrdev_region
    9.