[U-Boot] [PATCH v4 0/3] mtd, ubi, ubifs: resync with Linux-3.14

[Scott Wood]

On Sun, 2014-06-22 at 08:59 +0200, Heiko Schocher wrote:
> Ok, did a "git diff v3.7.1..v3.14 ..." for drivers/mtd/nand and
> drivers/mtd/mtd*.{c,h} and applied it with "git am -3 ..." after
> fetching the Linux tree into my U-boot repository ... this
> command worked now nice ... but there are subtle diffs between
> the sources in the "copied from linux" tree and the "git am -3"
> tree ... which did not pop up when doing a "git am -3 ...", just
> detected them because I could do a diff between "my copied from linux"
> version and the "git am -3 ..." created version!

It looks like the 3.7.1 sync was mainly just the NAND code, not the rest
of mtd, other than some API changes needed by the NAND code.

Did you find any differences in the NAND code?

> And I have no chance to detect this difference, when using
> "git am -3 ..." ... it just remains in the code ...
>
> I vote for copying the linux files, marking U-Boot specific code
> with __UBOOT__ ...

Yes, the 3-way merge approach requires that we know where and when the
old code came from.  Unfortunately that information is not present
outside of drivers/mtd/nand, so for those directories starting from
scratch is reasonable (unless we can figure it out based on when the
code was added to U-Boot...).  Once that's been done, future updates can
be done with 3-way merges.

I still disagree with #ifndef __UBOOT__ as it will hurt more than it
helps with future merges.

-Scott