linux驱动中ioremap返回值是0是怎么回事

2025-05-14 12:41:19
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回答1:

#include #include #include int mian() { pid_t pid; int a=2; int ret=1; pid=fork(); if(pid==0) { return 2; } else if(pid>0) { wait((void *)&ret); printf("return is:%d\n",ret); return 0; } else { printf("create process error!"); ...