Re: [PATCH 1/3] mtd: spi-nor: Export SFDP access to sysfs

[Alexander Williams]

On Wed, Apr 28, 2021 at 12:58 AM Michael Walle <michael@xxxxxxxx> wrote:
>
> Hi Alexander,
>
> Am 2021-04-28 07:27, schrieb Alexander Williams:
> > Add the ability to specify a technology-specific attribute_group, and
> > expose the SFDP through spi-nor's private group. This enables user
> > space
> > to have full access to the contents of the SFDP, so all information is
> > available without regard for whether the kernel supports parsing it.
>
> Please see:
> https://lore.kernel.org/linux-mtd/20210318092406.5340-1-michael@xxxxxxxx/

Thanks for the pointer! Sorry I didn't see that patch series already: My search
skills need some work... In any case, there's no good reason for me to duplicate
work.

I should probably comment on that series directly, but I'll note that one thing
I tried to do with the sysfs attributes here was avoid racing with user space.
The uevent is suppressed until all the related files are created in sysfs. See
http://kroah.com/log/blog/2013/06/26/how-to-create-a-sysfs-file-correctly/ for
Greg's explanation of a scenario.

- Alex