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Small fix for flash/intel/28fxxx


I've attached a patch to make sure CYGHWR_FLASH_WRITE_DISABLE() is called
flash_erase_block() before all returns.  I've also changed the timeout
logic so it is more robust using the GCC optimizer.  The original code,
when compiled for the ARM, had timing problems.  As an added bonus, the new
code uses fewer instructions on the ARM.

Michael Checky
(See attached file: flash.pat)

Attachment: flash.pat
Description: Binary data


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