How to strip out common terms in string Post: 302221572

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LEARN ABOUT LINUX

ddi_get_instance

ddi_get_instance(9F)					   Kernel Functions for Drivers 				      ddi_get_instance(9F)

NAME

       ddi_get_instance - get device instance number

SYNOPSIS

       #include <sys/ddi.h>
       #include <sys/sunddi.h>

       int ddi_get_instance(dev_info_t *dip);

INTERFACE LEVEL

       Solaris DDI specific (Solaris DDI).

PARAMETERS

       dip	Pointer to dev_info structure.

DESCRIPTION

       ddi_get_instance() returns the instance number of the device corresponding to dip.

       The  system  assigns  an instance number to every device.  Instance numbers  for devices attached to the same driver are unique.  This pro-
       vides a way for the system and the driver to uniquely identify one or more devices of the same type.  The instance number is derived by the
       system  from different properties for different device types in an  implementation specific manner.

       Once  an  instance  number  has	been  assigned	to a device, it will remain the same even across reconfigurations and reboots.	Therefore,
       instance  numbers seen by a driver may not appear to be in consecutive order. For example, if device foo0 has  been  assigned  an  instance
       number  of   0  and device  foo1 has been assigned an instance number of  1, if	foo0 is removed,  foo1 will continue to be associated with
       instance number	1 (even though foo1 is now the only device of its type on the system).

RETURN VALUES

       ddi_get_instance() returns the instance number of the device corresponding to  dip.

CONTEXT

       ddi_get_instance()can be called from user or interrupt context.

SEE ALSO

       path_to_inst(4)

       Writing Device Drivers

SunOS 5.10							    20 Jul 1994 					      ddi_get_instance(9F)