[PATCH RESEND u-boot-spi 0/8] Fix `mtd erase` when used with mtdpart

[Marek Behun]

On Wed, 21 Jul 2021 21:46:56 +0530
Jagan Teki <jagan at amarulasolutions.com> wrote:

> Hi Marek,
> 
> On Thu, Jul 15, 2021 at 5:21 AM Marek Behún <marek.behun at nic.cz> wrote:
> >
> > Hello,
> >
> > I accidentally forgot to send this series to U-Boot's mailing list last
> > time, meaning it did not end up in patchwork, so now I am resending it.
> > Sorry for this mess.
> >
> > The original cover letter said:
> >
> > this patch series fixes the `mtd erase` command when used with mtdpart
> > with a partition of non-zero offset.
> >
> > Currently when the `mtd erase` command is used for such a partition,
> > it does not erase all blocks. Instead after a block is erased, the next
> > block address not current block address + block size, but current block
> > address + block size + partition offset, due to spi_nor_erase() not
> > calling mtd_erase_callback():  
> >   => mtd erase "Rescue system"  
> >   Erasing 0x00000000 ... 0x006fffff (1792 eraseblock(s))
> >   jedec_spi_nor spi-nor at 0: at 0x100000, len 4096
> >   jedec_spi_nor spi-nor at 0: at 0x201000, len 4096
> >   jedec_spi_nor spi-nor at 0: at 0x302000, len 4096
> >   jedec_spi_nor spi-nor at 0: at 0x403000, len 4096
> >   jedec_spi_nor spi-nor at 0: at 0x504000, len 4096
> >   jedec_spi_nor spi-nor at 0: at 0x605000, len 4096
> >   jedec_spi_nor spi-nor at 0: at 0x706000, len 4096
> >
> > This series adds some fixes to spi_nor_erase() function, then adds
> > calling of mtd_erase_callback() to fix this bug.
> >
> > The series also contains an improvement - adding the posibility to
> > interrupt spi_nor_erase() with Ctrl+C; and another one - making mtdpart's
> > _erase() method more sane so that the above mentioned bug will not occur
> > even if underlying driver does not call mtd_erase_callback().
> >
> > Moreover I would also like to start a discussion regarding the MTD
> > subsystem:
> > - U-Boot's MTD subsystem is based on Linux's, with many #ifdef __U_BOOT__
> >   macros
> > - this was done to make it easier to port Linux's patches to U-Boot
> > - the problem is that it seems nobody did port Linux's MTD patches to
> >   U-Boot for a long time, the code is many times different from Linux',
> >   and it would be very hard to align it
> > - therefore I propose to get rid of all the #ifdefs, remove the Linux
> >   specific code, and continue developing the code independently from
> >   Linux. This would make it impossible to apply Linux patches in some
> >   kind of automatic way, but this is currently already impossible
> >   anyway
> > What do you guys think?
> >
> > Marek
> >
> > Marek Behún (8):
> >   mtd: spi-nor-core: Try cleaning up in case writing BAR failed
> >   mtd: spi-nor-core: Check return value of write_enable() in
> >     spi_nor_erase()
> >   mtd: spi-nor-core: Don't overwrite return value if it is non-zero
> >   mtd: spi-nor-core: Check return value of write_disable() in
> >     spi_nor_erase()
> >   mtd: spi-nor-core: Don't check for zero length in spi_nor_erase()
> >   mtd: spi-nor-core: Call mtd_erase_callback() from spi_nor_erase()
> >   mtd: spi-nor-core: Check for ctrlc() in spi_nor_erase()
> >   mtd: mtdpart: Make mtdpart's _erase method sane  
> 
> Found the build error with CI [1], would you please check?
> 
> [1] https://source.denx.de/u-boot/custodians/u-boot-spi/-/pipelines/8345
> 
> Jagan.

Jagan, I am unable to get the output of the failed CI tests. Probably
because I do not have an account at source.denx.de.

I tried to run "sandbox with clang" CI scenario on my local machine and
it is successful.

Can you send me outputs of the failed scenarios?

Marek