Hi, Thanks. > Isn't this supposed to be called /dev/mymisc ? Well, your are right ! and with /dev/mymisc it worked! sorry for the noise. BTW, it worked also without implementing the open() method rgs K. On Wed, Dec 19, 2012 at 10:51 AM, Daniel Baluta <daniel.baluta@xxxxxxxxx> wrote: > > > On Wed, Dec 19, 2012 at 10:36 AM, Kevin Wilson <wkevils@xxxxxxxxx> wrote: >> >> Hello,kernelnewbies >> >> I am trying to develop a misc driver in 3.7.0 kernel. >> >> As a basis I copy and paste this code, *without any change*, >> >> http://virtlog.com/2008/03/25/linux-miscdevice-sample/ >> >> And build it. >> after insmod I have : >> [root@n miscDevice]\>ls -al /dev/mymisc >> crw------- 1 root root 10, 59 Dec 19 10:24 /dev/mymisc >> >> >> However, when trying to open this file I get: >> open: No such file or directory >> >> Any ideas why ? > > > You should implement open. Check this out [1] >> >> >> The program with which I try to open the device is simple, a few lines >> following here: >> int main() >> { >> int fd; >> >> fd = open("/dev/mymodule", O_RDONLY); > > Isn't this supposed to be called /dev/mymisc ? >> >> if (fd == -1) { >> perror("open"); >> exit(1); >> } >> printf("open succeeded\n"); >> >> } >> > > thanks, > Daniel. > > [1] http://lxr.linux.no/#linux+v3.7.1/drivers/char/efirtc.c#L282 _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
