On Wed, Oct 07, 2015 at 12:00:47PM +0100, Srinivas Kandagatla wrote:

As required by many providers like at24/at25/mxs-ocotp/qfprom and may be
other providers would want to allow root-only to read the nvmem content.
So making the defaults to be root-only access would address the request
and also provide flexibility to providers to specify there own permissions
on top of the root-only using the perm flag in nvmem_config.
Making this dynamic did cut down lot of static binary attributes in the
code.

Check what the lifetime of a struct bin_attribute is before you embed it
into any other structure.  Sorry, but I think you're going to have to
read up on the driver model, sysfs, and kernfs implementations to find
out - I don't know the answer to this without doing the same.

However, this is basic checking that anyone should do when embedding
a structure within another.

-- 
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according to speedtest.net.