WAIT_ON_BIT_TIMEOUT(9)                    Driver Basics                    WAIT_ON_BIT_TIMEOUT(9)



NAME
       wait_on_bit_timeout - wait for a bit to be cleared or a timeout elapses

SYNOPSIS
       int wait_on_bit_timeout(unsigned long * word, int bit, unsigned mode,
                               unsigned long timeout);

ARGUMENTS
       word
           the word being waited on, a kernel virtual address

       bit
           the bit of the word being waited on

       mode
           the task state to sleep in

       timeout
           timeout, in jiffies

DESCRIPTION
       Use the standard hashed waitqueue table to wait for a bit to be cleared. This is similar
       to wait_on_bit, except also takes a timeout parameter.

       Returned value will be zero if the bit was cleared before the timeout elapsed, or non-zero
       if the timeout elapsed or process received a signal and the mode permitted wakeup on that
       signal.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                    WAIT_ON_BIT_TIMEOUT(9)