HI I have a pci base serial card i.e wch35x card. for 3.0.5, the driver does not exisits. Iam redeveloping for the same from scratch. But due mis detection, the pci card claims a driver named "serial". The lspci -k dispaly driver in use as serial. but in lsmod it does not lists. I want to remove the serial module which is claiming this device. so that is i can re write the driver just for learning purpose. 02:00.0 Serial controller: Device 4348:5046 (rev 10) (prog-if 02 [16550]) Subsystem: Device 4348:5046 Flags: medium devsel, IRQ 21 I/O ports at d030 [size=8] I/O ports at d020 [size=8] I/O ports at d010 [size=8] I/O ports at d000 [size=16] Kernel driver in use: serial 00: 48 43 46 50 01 00 00 02 10 02 00 07 00 00 00 00 10: 31 d0 00 00 21 d0 00 00 11 d0 00 00 01 d0 00 00 20: 00 00 00 00 00 00 00 00 00 00 00 00 48 43 46 50 30: 00 00 00 00 00 00 00 00 00 00 00 00 0b 01 00 00 -- To unsubscribe from this list: send the line "unsubscribe linux-serial" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html