beautypg.com

M1966_error_code_get – Maxim Integrated 73M1866B/73M1966B Reference Driver User Manual

Page 44

background image

73M1866B/73M1966B Reference Driver User Guide

UG_1x66B_015

44

Rev. 2.7

6.2.6 M1966_ERROR_CODE_GET

Description

This IOCTL returns the error code of the last IOCTL command. The driver records only the last error
code and applicable to device and channel descriptor.

#define M1966_ERROR_CODE_GET _IOWR(0xA4,0xB2,unsigned int)

Prototype

int ioctl (

int dev_fd,

int M1966_ERROR_CODE_GET,

unsigned long param );


Parameters

Data Type

Name

Description

int

dev_fd/chan_fd

Device or Channel descriptor.

int

M1966_ERROR_CODE_GET I/O control identifier for this operation.

unsigned long

param

Pointer to the error code of type unsigned int.


Return Values

Data Type

Description

int

0 – Successful.
-EFAULT – Failed to retrieve the error code.