Hi What is output for $ls -a /dev/mychardev I think sources for your "mychardev" would help a bit ;) -- -----Original Message----- From: Niroj Pokhrel <nirojpokhrel@xxxxxxxxx> Sender: kernelnewbies-bounces@xxxxxxxxxxxxxxxxx Date: Sat, 22 Dec 2012 21:39:51 To: <kernelnewbies@xxxxxxxxxxxxxxxxx> Subject: EACESS when trying to open the file _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies