SVR5

do_devinfo(D3)

do_devinfo -- invoke another driver's devinfo(D2) entry point routine

Synopsis

   #include <sys/types.h>
   #include <sys/ddi.h>
   
   int do_devinfo(chan_handle_t chan_handle, di_parm_t parm, void *valp);

Description

do_devinfo( ) invokes another driver's devinfo(D2) entry point for which this driver has obtained a channel handle with the drv_open(D3) function. The other driver may actually be the same driver.

Arguments

chan_handle: Channel handle returned by the other driver's drv_open(D3) call.
parm: Passed as an argument to the other driver's devinfo(D2) entry point
valp: Passed as an argument to the other driver's devinfo(D2) entry point

Return values

Usage

Context and synchronization

User or blockable context.

Hardware applicability

All

Version applicability

ddi: 8, 8mp

References

devinfo(D2), drv_attach(D3), drv_detach(D3), drv_open(D3)

``Layered device drivers'' in HDK Technical Reference