diff options
Diffstat (limited to 'doc/bsp_howto')
| -rw-r--r-- | doc/bsp_howto/clock.t | 28 |
1 files changed, 3 insertions, 25 deletions
diff --git a/doc/bsp_howto/clock.t b/doc/bsp_howto/clock.t index 69b16e154b..c6d46d4756 100644 --- a/doc/bsp_howto/clock.t +++ b/doc/bsp_howto/clock.t @@ -104,29 +104,7 @@ rtems_isr Clock_isr( rtems_vector_number vector ) @section IO Control -The clock driver must supply a handler for the IO control device driver -entry point. This functionality is used by other components -- notably -the Shared Memory Driver to install a wrapper for the clock interrupt -service routine. The following shows the functionality required: - -@example -@group -rtems_device_driver Clock_control( - rtems_device_major_number major, - rtems_device_minor_number minor, - void *pargp -) -@{ - error check the argument pointer parameter - - if the command is "ISR" - invoke the clock interrupt service routine - else if the command is "NEW" - install the requested handler -@} -@end group -@end example - - - +Prior to RTEMS 4.9, the Shared Memory MPCI Driver required a special +IOCTL in the Clock Driver. This is no longer required and the Clock +Driver does not have to provide an IOCTL method at all. |