[PATCH v8] mtd: create per-device and module-scope debugfs entries

[Brian Norris]

On Mon, May 29, 2017 at 08:38:41AM -0300, Mario J. Rugiero wrote:
> Several MTD devices are using debugfs entries created in the root.
> This commit provides the means for a standardized subtree, creating
> one "mtd" entry at root, and one entry per device inside it, named
> after the device.
> The tree is registered in add_mtd_device, and released in
> del_mtd_device.
> Devices docg3, mtdswap and nandsim were updated to use this subtree
> instead of custom ones, and their entries were prefixed with the
> drivers' names.
> 
> Signed-off-by: Mario J. Rugiero <mrugiero at gmail.com>
> Acked-by: Boris Brezillon <boris.brezillon at free-electrons.com>
> ---
> v8: - fix CONFIG_DEBUG_FS typo.
> v7: - as per derRichard and bbrezillon suggestion, dev_names are used
>       instead of 'pretty' names for the entries, and driver-specific
>       entries are prefixed with the drivers' names.
> v6: - as per bbrezillon suggestion, more cleanups were done in the drivers,
>       removing now unused structure members and functions.
>     - dropped explicit setting to NULL to the dfs_dir member for the MTD,
>       as it is expected to be zeroed out, thanks again to bbrezillon for
>       pointing this out.
>     - removed an extern declaration of a symbol which was never defined,
>       spotted by bbrezillon.
> v5: - cleanup drivers creating their own debugfs sub-tree.
>     - separate the patch again, as it makes sense on its own as cleanup.
> v4: - include in a bigger patchset which explains the use of this tree.
> v3: - move the changelog out of the commit message
> v2: - remove unused macros and add a commit message
> v1: - create the debugfs entries

Applied to l2-mtd.git