1CANCEL_WORK_SYNC(9)              Driver Basics             CANCEL_WORK_SYNC(9)
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NAME

6       cancel_work_sync - cancel a work and wait for it to finish
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SYNOPSIS

9       bool cancel_work_sync(struct work_struct * work);
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ARGUMENTS

12       work
13           the work to cancel
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DESCRIPTION

16       Cancel work and wait for its execution to finish. This function can be
17       used even if the work re-queues itself or migrates to another
18       workqueue. On return from this function, work is guaranteed to be not
19       pending or executing on any CPU.
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21       cancel_work_sync(delayed_work->work) must not be used for
22       delayed_work's. Use cancel_delayed_work_sync instead.
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24       The caller must ensure that the workqueue on which work was last queued
25       can't be destroyed before this function returns.
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RETURNS

28       true if work was pending, false otherwise.
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31Kernel Hackers Manual 3.10         June 2019               CANCEL_WORK_SYNC(9)
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