I'm trying to remove drivers/acpi/motherboard.c, which is mostly redundant with drivers/pnp/system.c. So make sure that we include the PNP driver in the default config. Most distros enable this already. Turning on CONFIG_PNP also causes the following options to be enabled: CONFIG_PNPACPI CONFIG_SERIAL_8250_PNP CONFIG_SERIAL_8250_PNP causes legacy serial ports to be discovered twice, which is ugly but harmless: serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A 00:07: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A Signed-off-by: Bjorn Helgaas <bjorn.helgaas@xxxxxx> Index: mm-work13/arch/i386/defconfig =================================================================== --- mm-work13.orig/arch/i386/defconfig 2007-01-11 13:56:18.000000000 -0700 +++ mm-work13/arch/i386/defconfig 2007-01-11 13:57:23.000000000 -0700 @@ -466,7 +466,7 @@ # # Plug and Play support # -# CONFIG_PNP is not set +CONFIG_PNP=y # # Block devices - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html