BUS_FOR_EACH_DRV(9)               Device drivers infrastructure               BUS_FOR_EACH_DRV(9)



NAME
       bus_for_each_drv - driver iterator

SYNOPSIS
       int bus_for_each_drv(struct bus_type * bus, struct device_driver * start, void * data,
                            int (*fn) (struct device_driver *, void *));

ARGUMENTS
       bus
           bus we're dealing with.

       start
           driver to start iterating on.

       data
           data to pass to the callback.

       fn
           function to call for each driver.

DESCRIPTION
       This is nearly identical to the device iterator above. We iterate over each driver that
       belongs to bus, and call fn for each. If fn returns anything but 0, we break out and
       return it. If start is not NULL, we use it as the head of the list.

NOTE
       we don't return the driver that returns a non-zero value, nor do we leave the reference
       count incremented for that driver. If the caller needs to know that info, it must set it
       in the callback. It must also be sure to increment the refcount so it doesn't disappear
       before returning to the caller.

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