[PATCH] enable erase-suspend-program for CFI cmdset_0002

Artem Bityutskiy dedekind1 at gmail.com
Tue Nov 24 09:36:46 EST 2009


On Thu, 2009-11-19 at 12:01 +0100, Norbert van Bolhuis wrote:
> erase-suspend for writing is required to avoid blocking applications that wish
> to write some data (to a NOR block other than the one being erased).
> Particularly, it solves some huge delays that an application (which writes to a
> UBIFS) will experience if UBI attaches to empty NOR flash. In this case the
> UBI background thread will erase a lot of blocks and the application can be blocked
> for minutes because of the "MTD/CFI chip lock".
> This feature has been disabled for years. Maybe this was because the old code
> turned it on for erase-suspend read-only chips also (cfip->EraseSuspend & 0x1).
> This is wrong and corrected now.
> I tested this patch and it seems to work fine.
> 
> Signed-off-by: Norbert van Bolhuis <nvbolhuis at aimvalley.nl>

I did not follow the patch conversation too closely - but should you be
the patch author or Joakim? If you took it as it is - then it is Joakim.
If you modified it, then at least Joakim's name should be in the commit
log.

-- 
Best Regards,
Artem Bityutskiy (Артём Битюцкий)




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