在看内核源码的时候，经常会遇到IS_ERR，比如在linuxarcharmkernelsys_armc中[plain]viewplaincopyprint?asmlinkageintsys_execv
//main.c[cpp]viewplaincopyprint?#includeSTC_NEW_8051.H>#includeControlRobot.h#includeintrins.h>
[cpp]viewplaincopyprint?********************************************************************此程序是I2C操
1简介[plain]viewplaincopyprint?includesyssocketh>ssize_trecv(intsockfd,void*buff,size_tnbytes,intfl
[plain]viewplaincopyprint?@*************************************************************************
