I have configured linux-2.6.13.2 for a db1550_defconfig build. When I compile it, I get this error when compiling au1x00_uart.c: LD usr/built-in.o HOSTCC drivers/pci/gen-devlist DEVLIST drivers/pci/devlist.h CC drivers/pci/names.o In file included from include/linux/mm.h:36, from include/asm/pci.h:10, from include/linux/pci.h:919, from drivers/pci/names.c:11: include/asm/pgtable.h: In function `io_remap_pfn_range': include/asm/pgtable.h:377: warning: unused variable `phys_addr_high' LD drivers/pci/built-in.o CC drivers/serial/au1x00_uart.o drivers/serial/au1x00_uart.c:72: error: `AU1000_UART0_INT' undeclared here (not in a function) drivers/serial/au1x00_uart.c:72: error: initializer element is not constant drivers/serial/au1x00_uart.c:72: error: (near initialization for `old_serial_por t[0].irq') drivers/serial/au1x00_uart.c:75: error: initializer element is not constant drivers/serial/au1x00_uart.c:75: error: (near initialization for `old_serial_por t[0]') drivers/serial/au1x00_uart.c:78: error: `AU1000_UART1_INT' undeclared here (not in a function) drivers/serial/au1x00_uart.c:78: error: initializer element is not constant drivers/serial/au1x00_uart.c:78: error: (near initialization for `old_serial_por t[1].irq') drivers/serial/au1x00_uart.c:81: error: initializer element is not constant drivers/serial/au1x00_uart.c:81: error: (near initialization for `old_serial_por t[1]') drivers/serial/au1x00_uart.c:84: error: `UART2_ADDR' undeclared here (not in a f unction) drivers/serial/au1x00_uart.c:84: error: initializer element is not constant drivers/serial/au1x00_uart.c:84: error: (near initialization for `old_serial_por t[2].iomem_base') drivers/serial/au1x00_uart.c:85: error: `AU1000_UART2_INT' undeclared here (not in a function) drivers/serial/au1x00_uart.c:85: error: initializer element is not constant drivers/serial/au1x00_uart.c:85: error: (near initialization for `old_serial_por t[2].irq') drivers/serial/au1x00_uart.c:88: error: initializer element is not constant drivers/serial/au1x00_uart.c:88: error: (near initialization for `old_serial_por t[2]') drivers/serial/au1x00_uart.c:92: error: `AU1000_UART3_INT' undeclared here (not in a function) drivers/serial/au1x00_uart.c:92: error: initializer element is not constant drivers/serial/au1x00_uart.c:92: error: (near initialization for `old_serial_por t[3].irq') drivers/serial/au1x00_uart.c:95: error: initializer element is not constant drivers/serial/au1x00_uart.c:95: error: (near initialization for `old_serial_por t[3]') make[2]: *** [drivers/serial/au1x00_uart.o] Error 1 make[1]: *** [drivers/serial] Error 2 make: *** [drivers] Error 2 Kyle@buzz /usr/src/linux-2.6.13.2 $