ENABLE_CMF(9)                              The ccw bus                              ENABLE_CMF(9)



NAME
       enable_cmf - switch on the channel measurement for a specific device

SYNOPSIS
       int enable_cmf(struct ccw_device * cdev);

ARGUMENTS
       cdev
           The ccw device to be enabled

DESCRIPTION
       Returns 0 for success or a negative error value.

NOTE
       If this is called on a device for which channel measurement is already enabled a reset of
       the measurement data is triggered.

CONTEXT
       non-atomic

AUTHOR
       Cornelia Huck <cornelia.huck AT de.com>
           Author.

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