Re: mainline build failure due to f1e4c916f97f ("drm/edid: add EDID block count and size helpers")

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On Sat, May 28, 2022 at 8:08 PM Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> Not very much tested, and I have no idea what it is that triggers this
> only on spear3xx_defconfig.
>
> Some ARM ABI issue that is triggered by some very particular ARM
> compiler flag enabled by that config?

It's CONFIG_ARM_AEABI, which is normally set everywhere. Without this
option, you the kernel is built for the old 'OABI' that forces all non-packed
struct members to be at least 16-bit aligned.

I think Russell still uses OABI kernels on his oldest machines, but it is
incompatible with all modern user space and should probably not be
in the defconfig.

Your patch looks like the correct solution to me.

      Arnd



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