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Date: Tue, 13 Mar 2012 10:17:49 -0700
From: Mike Dunn <mikedunn@newsguy.com>
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To: linux-mtd@lists.infradead.org
Subject: Re: MTD API locking and concurrency
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On 03/12/2012 10:45 PM, 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.


FYI, the nand infrastructure code handles this for its devices; see
nand_base.c::nand_get_device()

Mike