hwitag_find_errata()

Updated: May 06, 2022

Find an erratum for a device

Synopsis:

#include <drvr/hwinfo.h>

int hwitag_find_errata( unsigned hwi_off,
                        unsigned *errata_idx );

Arguments:

hwi_off
The offset into the hwinfo section of the system page for the device, which you can get by calling hwi_find_device().
errata_idx
NULL, or a pointer to a location that holds the index of the erratum that you want to find; see below.

Library:

libdrvr

Use the -l drvr option to qcc to link against this library.

Description:

You can use hwitag_find_errata() to find one or more errata tags associated with the device at hwi_off in the hwinfo section of the syspage.

You can retrieve all errata by using the errata_idx parameter as follows:

By convention, startup sets the erratum value to the vendor's chosen erratum number as obtained from the errata documents. Some vendors don't necessarily use a unique erratum number, and so the startup and driver must agree on an erratum value.

Returns:

The errata value, or -1 on error.

Classification:

QNX Neutrino

Safety:  
Cancellation point No
Interrupt handler No
Signal handler No
Thread Yes