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.
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
Thomas
--
--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)
