why open em8xxx0 segmentation fault

[liloyu]

i want to get stc
here is my code

 
  
    #include <stdlib.h>
    #include <stdio.h>
    #include <asm/types.h>
    #include <linux/sigma/em8xxx.h>
    #include <sys/ioctl.h>
    #include <fcntl.h>
    #include <sys/time.h>
    #include <unistd.h>
   
    int main( int argc, char *argv)
    {
    int fd_sigma=-1;
    fd_sigma = open("/dev/sigma/em8xxx0", O_RDWR);
            if (fd_sigma != -1) {
       printf("open sigma em8xxx device error\n");
       return 1;
            }
    struct sigma_time sigmatime;
    struct timeval tv;
            gettimeofday(&tv,NULL);
            //sigmatime.time= (__u64)tv.tv_sec*10000+(__u64)tv.tv_usec/100;
    //ioctl(fd_sigma, SGMIOCTL_DECODER_GET_SYSTEM_CLOCK, &sigmatime);
    //printf("time is %x\n",sigmatime.time);
    close(fd_sigma);
    return 0;
    }

[Sergey Kostyuk]

Fixed