Linux 6.19-rc1 mediatek mt7921e broke badly

[Eric Biggers]

On Tue, Dec 30, 2025 at 05:27:13PM -0800, Linus Torvalds wrote:
> On Tue, 30 Dec 2025 at 15:57, Shuah Khan <skhan at linuxfoundation.org> wrote:
> >
> > I would recommend reverting f804a5895eba instead of trying
> > fix it. Then find a better way to eliminate extra newline that
> > shows up in dmesg when firmware build date happens to have
> > a newline.
> 
> Yeah. Let's revert it.
> 
> And the way to fix the extra newline is trivial: just remove it from
> the "dev_info()" format string.
> 
> Our kernel printing logic will add a newline for the next line anyway
> if it is missing (unless somebody explicitly uses PR_CONT).
> 
> Can whoever saw the problem confirm that just a revert and a "remove
> \n from that dev_info()" fixes the output for them?

That works for me.  The revert by itself makes the FORTIFY_SOURCE crash
go away and reintroduces a blank line in the log.  Removing the \n from
the string passed to dev_info as well makes the blank line go away.

- Eric