Thomas Zimmermann <tzimmerm...@suse.de> writes: > Hi Javier, Marcus > > Am 05.05.25 um 11:27 schrieb Javier Martinez Canillas: >> Thomas Zimmermann <tzimmerm...@suse.de> writes: >> >> Hello Thomas, >> >>> Hi, >>> >>> there's one major issue here. You must not change the Kconfig symbols or >>> you'll break kernel updates for a lot of people. So those TINYDRM_* must >>> remain as is. >>> >> I disagree. The https://docs.kernel.org/admin-guide/abi.html document >> explictly states that Kconfig symbols are not an ABI, and userspace >> should not rely on these not changing over time. > > To summarize our discussion on irc [1]: changing the symbols is ok, but > we should make it compatible to ease the transition. To do so, the new > Kconfig file can still contain the old Kconfig symbol and the new one > defaults to it. Something like this: > > config TINYDRM_ST7586 > tristate > default n > > config DRM_ST7586 > tristate "bla bla" > ... > default TINYDRM_ST7586 > > Doing 'make olddefconfig' or a similar make command sets the new symbol > from the pre-existing one. After a few releases the old symbol can be > removed. >
That makes sense to me, yes. I'm not against making the life of distro maintainers easier. We can then drop these transition symbols after a few kernel releases. > Best regards > Thomas > > > [1] > https://people.freedesktop.org/~cbrill/dri-log/?channel=dri-devel&highlight_names=&date=2025-05-05&show_html=true > -- Best regards, Javier Martinez Canillas Core Platforms Red Hat
