depends on BLOCK
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
-@@ -82,6 +82,7 @@ obj-$(CONFIG_NWFLASH) += nwflash.o
+@@ -70,6 +70,7 @@ obj-$(CONFIG_NWFLASH) += nwflash.o
obj-$(CONFIG_SCx200_GPIO) += scx200_gpio.o
obj-$(CONFIG_PC8736x_GPIO) += pc8736x_gpio.o
obj-$(CONFIG_NSC_GPIO) += nsc_gpio.o