REGRESSION: kernel: configure the kernel only when an input changed

[Russell Senior]

Seems fixed!

Thank you!

-- 
Russell Senior
russell at personaltelco.net

On Sat, Oct 3, 2026 at 1:10 AM John Crispin <john at phrozen.org> wrote:
>
>
>
> On 02.10.26 21:00, Russell Senior wrote:
> > https://github.com/openwrt/openwrt/commit/e97e3f36bd5d48add83c5c7fba907600b12a653c
> >
> > This commit results in a regression on realtek switches (and perhaps
> > elsewhere), where a stale initramfs kernel gets included in a
> > subsequent squashfs image. See explanation here:
> > https://pastebin.com/xhHsTQng. Reverting this commit was tested and
> > fixes the problem.
> >
> > To reproduce, with a .config stub of:
> >
> >   CONFIG_TARGET_realtek=y
> >   CONFIG_TARGET_realtek_rtl931x=y
> >   CONFIG_TARGET_realtek_rtl931x_DEVICE_zyxel_xs1930-12hp=y
> >
> > time make BUILD_LOG=1 IGNORE_ERRORS=m V=s target/linux/clean
> > time make BUILD_LOG=1 IGNORE_ERRORS=m V=s
> > $ ls -al bin/targets/realtek/rtl931x/*.bin
> > <touch a file in the files overlay>
> > time make -j1 BUILD_LOG=1 IGNORE_ERRORS=m V=s
> > $ ls -al bin/targets/realtek/rtl931x/*.bin
> >
> > The squashfs-sysupgrade.bin file size will jump by a few megabytes in
> > the second build and, more significantly, boots as an initramfs
> > instead of a squashfs due to the kernel-embdedded cpio rootfs.
> >
>
>
> thanks for reporting the regression should be fixed by 5d5ade6d162d219828900e8fa4faa274a19808f4
>
>         John