[PATCH v5 0/3] Introduce mtdblock device

[Alexey Romanov]

Hi Simon,

On Wed, Jun 05, 2024 at 07:17:34AM -0600, Simon Glass wrote:
> Hi Alexey,
> 
> On Wed, 5 Jun 2024 at 04:09, Alexey Romanov <avromanov at salutedevices.com> wrote:
> >
> > Hi Simon,
> > your message is empty.
> >
> > On Tue, Jun 04, 2024 at 08:13:34PM -0600, Simon Glass wrote:
> > > Hi Alexey,
> > >
> > > On Mon, Jun 3, 2024, 09:57 Alexey Romanov <avromanov at salutedevices.com>
> > > wrote:
> > >
> > > > Hello!
> > > >
> > > > This series adds support for the mtdblock device, which
> > > > allows to read/write data block by block. For example,
> > > > it can now be used for BCB or Android AB command:
> > > >
> > > >   $ bcb load mtd 0 part_name
> > > >
> > > > Tested only on SPI NAND, so bind is made only for
> > > > SPI NAND drivers.
> > > >
> > > > ---
> > > >
> > > > Changes V1 -> V2 [1]:
> > > >
> > > >   - Drop patch [2].
> > > >   - Add warning if bind NAND mtdblock device.
> > > >   - Move documentation of mtdblock implementation
> > > >     from commit message to the source code.
> > > >   - Remove __maybe_unused from mtd partition functions
> > > >     description.
> > > >   - Use blk_enabled() instead of #ifdefs.
> > > >
> > > > Changes V2 -> V3 [2]:
> > > >
> > > >   - Rebased over [3].
> > > >   - Rename mtd_bread/bwrite -> mtd_blk_read/write.
> > > >   - Fix GPL-2.0 license short name definiton in headers.
> > > >   - Add empty line after MTD_ENTRY_NUMBERS define.
> > > >
> > > > Changes V3 -> V4 [4]:
> > > >
> > > >   - Fix build warnings: use LBAF printf format string for lbaint_t types.
> > > >
> > > > Changes V4 -> V5 [5]:
> > > >
> > > >   - Rebased over u-boot/master.
> > > >   - Fix build errors and warnings if CONFIG_BLK isn't enabled.
> > > >   - Fix failed tests in cases is mtdblock device isn't binded.
> > > >
> > > > Links:
> > > >
> > > >   - [1]
> > > > https://lore.kernel.org/all/20240227100441.1811047-1-avromanov@salutedevices.com/
> > > >   - [2]
> > > > https://lore.kernel.org/all/20240227100441.1811047-5-avromanov@salutedevices.com/
> > > >   - [3]
> > > > https://lore.kernel.org/u-boot/20240403114047.84030-1-heinrich.schuchardt@canonical.com/T/#u
> > > >   - [4]
> > > > https://lore.kernel.org/all/20240404105813.1520732-1-avromanov@salutedevices.com/
> > > >   - [5]
> > > > https://lore.kernel.org/all/20240524102920.2631731-1-avromanov@salutedevices.com/
> > > >
> > > > Alexey Romanov (3):
> > > >   disk: support MTD partitions
> > > >   drivers: introduce mtdblock abstraction
> > > >   spinand: bind mtdblock
> > > >
> > > >  disk/part.c                 |   3 +-
> > > >  drivers/block/blk-uclass.c  |   1 +
> > > >  drivers/mtd/Kconfig         |   1 +
> > > >  drivers/mtd/Makefile        |   1 +
> > > >  drivers/mtd/mtdblock.c      | 227 ++++++++++++++++++++++++++++++++++++
> > > >  drivers/mtd/mtdpart.c       |  76 ++++++++++++
> > > >  drivers/mtd/nand/spi/core.c |  20 ++++
> > > >  include/linux/mtd/mtd.h     |  21 ++++
> > > >  include/part.h              |   3 +
> > > >  9 files changed, 352 insertions(+), 1 deletion(-)
> > > >  create mode 100644 drivers/mtd/mtdblock.c
> > > >
> > > > --
> > > > 2.34.1
> > > >
> > > >
> >
> 
> Are you able to add a sandbox test for this code?

I think no. mtd/ubi block devices at the moment binds
to real SPI NAND devices, which makes it impossible and useless 
to test it with sandbox.

> 
> Regards,
> Simon

-- 
Thank you,
Alexey