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Kernel Functions for Driversddi_driver_major(9F)

NAME

 ddi_driver_major - return driver's major device number

SYNOPSIS

  
#include <sys/ddi.h>
#include <sys/sunddi.h>
major_t ddi_driver_major(dev_info_t *dip);

INTERFACE LEVEL

 

Solaris DDI specific (Solaris DDI)

DESCRIPTION

 

ddi_driver_major() returns the major device number for the driver associated with the supplied dev_info node. This value can then be used as an argument to makedevice(9F) to construct a complete dev_t.

PARAMETERS

 
dip
A pointer to the device's dev_info structure.

RETURN VALUES

 

ddi_driver_major() returns the major number of the driver bound to a device, if any, or DDI_MAJOR_T_NONE otherwise.

CONTEXT

 

ddi_driver_major() can be called from kernel or interrupt context.

SEE ALSO

 

ddi_driver_name(9F)

Writing Device Drivers

SunOS 5.9Go To TopLast Changed 18 Jun 2001
 
      
      
Copyright 2002 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms.