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WAIT_FOR_COMPLETION_(9) Driver Basics WAIT_FOR_COMPLETION_(9)

NAME

wait_for_completion_interruptible_timeout - waits for completion (w/(to,intr))

SYNOPSIS

long __sched wait_for_completion_interruptible_timeout(struct completion * x, unsigned long timeout);

ARGUMENTS

x
holds the state of this particular completion
timeout
timeout value in jiffies

DESCRIPTION

This waits for either a completion of a specific task to be signaled or for a specified timeout to expire. It is interruptible. The timeout is in jiffies.
The return value is -ERESTARTSYS if interrupted, 0 if timed out, positive (at least 1, or number of jiffies left till timeout) if completed.

COPYRIGHT

March 2016 Kernel Hackers Manual 3.2.