The VMU is a small (approx 128K) hotpluggable flash device on the SEGA Dreamcast.

To get this to work I have had to rewrite parts of the maple bus driver - some of that
is bug fixing (in the sense that the bus driver was not allowing proper probing, just
forcing the load of the appropriate driver) - the main functional change is to add a
semaphore to the maple device (to ensure that devices can properly inject maple packets
into the queue of packets waiting to be dispatched via DMA to the devices themselves).

Signed-off-by: Adrian McMenamin <adrian@mcmen.demon.co.uk>


 drivers/mtd/maps/Kconfig     |   14 +
 drivers/mtd/maps/Makefile    |    1 +
 drivers/mtd/maps/vmu_flash.c |  746 ++++++++++++++++++++++++++++++++++++++++++
 drivers/sh/maple/maple.c     |  113 ++++---
 include/linux/maple.h        |    2 +


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