Hello,

This patch adds a function add_mtd_device_full which works the same as
add_mtd_device except it allows you to request a particular minor number
for the new device.

I wanted this because on our boards we have Flash, SRAM and BIOS all
accessible via MTD, unfortunately the minor number of the SRAM and BIOS
devices can change depending on how many partitions exist in the main
Flash, and the BIOS minor number can additionally change depending on if
the board has SRAM fitted or not etc. I would much prefer to be able to
say that SRAM would always be mtd14 and BIOS would be mtd15.

It is also possible (and I have done this :-( ) that when booting from a
HDD or CDROM you modprobe the BIOS mapping module before the Flash
mapping module and happily overwrite the BIOS (on mtd0) thinking it is
the boot partition on the flash (which is normally mtd0).

What are the chances of this being rolled into the main MTD
distribution?

I've also attached mtd.ram.erase.patch which I sent ages ago which is
needed to mount JFFS2 on an SRAM (map_ram) device.

Ian.

-- 
Ian Campbell
Design Engineer

Arcom Control Systems Ltd,
Clifton Road,
Cambridge CB1 7EA
United Kingdom

Tel: +44 (0)1223 403465
E-Mail: icampbell@arcom.com
Web: http://www.arcom.com


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