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flash: clarify protect documentation 

some chips unprotect more than the range asked for. The
protect fn, must unprotect/protect minimally the range given.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
This commit is contained in:
Øyvind Harboe 2010-12-14 09:29:26 +01:00
parent cbf48bed6a
commit 39dbb516a4
1 changed files with 6 additions and 3 deletions
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9
src/flash/nor/driver.h
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@ -105,9 +105,12 @@ struct flash_driver
/**
* Bank/sector protection routine (target-specific).
* When called, the driver should disable 'flash write' bits (or
* enable 'erase protection' bits) for the given @a bank and @a
* sectors.
*
* When called, the driver should enable/disable protection
* for MINIMUM the range covered by first..last sectors
* inclusive. Some chips have alignment requirements will
* cause the actual range to be protected / unprotected to
* be larger than the first..last range.
*
* @param bank The bank to protect or unprotect.
* @param set If non-zero, enable protection; if 0, disable it.