Re: [PATCH 4/9] nvmem: layouts: add U-Boot env layout

[Greg KH <gregkh@linuxfoundation.org>]

On Tue, Sep 03, 2024 at 01:04:20PM +0200, Rafał Miłecki wrote:
> Hi Greg,
> 
> On 2024-09-03 12:12, Greg KH wrote:
> > On Mon, Sep 02, 2024 at 03:29:47PM +0100, srinivas.kandagatla@linaro.org
> > wrote:
> > > From: Rafał Miłecki <rafal@milecki.pl>
> > > 
> > > U-Boot environment variables are stored in a specific format. Actual
> > > data can be placed in various storage sources (MTD, UBI volume,
> > > EEPROM,
> > > NVRAM, etc.).
> > > 
> > > Move all generic (NVMEM device independent) code from NVMEM device
> > > driver to an NVMEM layout driver. Then add a simple NVMEM layout
> > > code on
> > > top of it.
> > > 
> > > This allows using NVMEM layout for parsing U-Boot env data stored in
> > > any
> > > kind of NVMEM device.
> > > 
> > > The old NVMEM glue driver stays in place for handling bindings in the
> > > MTD context. To avoid code duplication it uses exported layout parsing
> > > function. Please note that handling MTD & NVMEM layout bindings may be
> > > refactored in the future.
> > > 
> > > Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
> > > Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
> > > Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
> > > ---
> > >  MAINTAINERS                        |   1 +
> > >  drivers/nvmem/Kconfig              |   3 +-
> > >  drivers/nvmem/layouts/Kconfig      |  11 ++
> > >  drivers/nvmem/layouts/Makefile     |   1 +
> > >  drivers/nvmem/layouts/u-boot-env.c | 211
> > > +++++++++++++++++++++++++++++
> > >  drivers/nvmem/layouts/u-boot-env.h |  15 ++
> > >  drivers/nvmem/u-boot-env.c         | 165 +---------------------
> > >  7 files changed, 242 insertions(+), 165 deletions(-)
> > >  create mode 100644 drivers/nvmem/layouts/u-boot-env.c
> > >  create mode 100644 drivers/nvmem/layouts/u-boot-env.h
> > 
> > This patch doesn't apply to my tree :(
> > 
> > Also, if you generate patches with 'git format-patch -M' you can see
> > when files move easier (if that's what happened here, hard to tell..)
> 
> It's because it was developed on top of "nvmem: u-boot-env: error if NVMEM
> device is too small" which you applied to the "char-misc-linus" branch.
> Perhaps you could push that fix ("error if...") to your both branches
> somehow?

I can pull the char-misc-linus branch into my -next branch if that would
help out here?  Give me a few days to let 0-day run on things to make
sure they are all sane first.

thanks,

greg k-h