mmc: mmc host test driver

A dummy driver that performs a series of requests that are often mis-
handled by host drivers.
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>

drivers/mmc/card/Kconfig

@@ -39,3 +39,15 @@ config SDIO_UART
 	  SDIO function driver for SDIO cards that implements the UART
 	  class, as well as the GPS class which appears like a UART.
 
+config MMC_TEST
+	tristate "MMC host test driver"
+	default n
+	help
+	  Development driver that performs a series of reads and writes
+	  to a memory card in order to expose certain well known bugs
+	  in host controllers. The tests are executed by writing to the
+	  "test" file in sysfs under each card. Note that whatever is
+	  on your card will be overwritten by these tests.
+
+	  This driver is only of interest to those developing or
+	  testing a host driver. Most people should say N here.

drivers/mmc/card/Makefile

@@ -8,6 +8,7 @@ endif
 
 obj-$(CONFIG_MMC_BLOCK)		+= mmc_block.o
 mmc_block-objs			:= block.o queue.o
+obj-$(CONFIG_MMC_TEST)		+= mmc_test.o
 
 obj-$(CONFIG_SDIO_UART)		+= sdio_uart.o