diff -urN linux-2.6.23.12/drivers/block/Kconfig linux-2.6.23.12.new/drivers/block/Kconfig
--- linux-2.6.23.12/drivers/block/Kconfig	2007-12-18 22:55:57.000000000 +0100
+++ linux-2.6.23.12.new/drivers/block/Kconfig	2008-01-11 08:53:32.000000000 +0100
@@ -426,6 +426,14 @@
 	  Support for virtual disk devices as a client under Sun
 	  Logical Domains.
 
+config BLK_DEV_CF_MIPS
+	bool "CF slot of RB532 board"
+	depends on MIKROTIK_RB500
+	default y
+	help
+	 The Routerboard 532 has a CF slot on it. Enable the special block
+	 device driver for it.
+
 source "drivers/s390/block/Kconfig"
 
 config XILINX_SYSACE
diff -urN linux-2.6.23.12/drivers/block/Makefile linux-2.6.23.12.new/drivers/block/Makefile
--- linux-2.6.23.12/drivers/block/Makefile	2007-12-18 22:55:57.000000000 +0100
+++ linux-2.6.23.12.new/drivers/block/Makefile	2008-01-11 08:54:04.000000000 +0100
@@ -21,6 +21,7 @@
 obj-$(CONFIG_XILINX_SYSACE)	+= xsysace.o
 obj-$(CONFIG_CDROM_PKTCDVD)	+= pktcdvd.o
 obj-$(CONFIG_SUNVDC)		+= sunvdc.o
+obj-$(CONFIG_BLK_DEV_CF_MIPS)	+= rb500/
 
 obj-$(CONFIG_BLK_DEV_UMEM)	+= umem.o
 obj-$(CONFIG_BLK_DEV_NBD)	+= nbd.o