Char device question: cdev_del()

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Hi,

What happens if the driver calls cdev_del() while one of the character
device is being used (i.e. for. e.g. some process is in the middle of
the ioctl call for that character device).

Does the cdev_del() wait for that call to get completed? Is the driver
guaranteed that once the cdev_del() returns, none of the driver
character device operations are in use?

Thanks,

Rajat
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