MTD API locking and concurrency

[Artem Bityutskiy]

On Tue, 2012-03-13 at 06:45 +0100, Robert Jarzmik wrote:
> Hi,
> 
> I came across a concurrent usage of my MTD driver by UBIFS by doing
> an IOC_UBI_UPVOL. As my chip doesn't support multiple requests at a time, I need
> to protect the access to chip registers.
> 
> I wonder if mtd api function can be called in interrupt context.

No, this is not explicitely documented and you are welcome to send a
patch which adds a comment to mtd.h, but all the MTD API functions are
supposed to be called from sleeping context. IOW, the caller should keep
in mind that these functions may sleep.

-- 
Best Regards,
Artem Bityutskiy
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