If not RPi4, don't "pacman -Syu" today.

[rern]

• Kernel linux-raspberrypi* 5.10.73-1 causes failed boot.
• DIY rAudio also suffers this.

It's fixed.

[klassikmann]

@rern
What a pity! First thing I did this morning - before reading your warning - was a "pacman -Syu".
Restoring the contents of /var/cache/pacman/pkg/linux-raspberrypi4-5.10.64-1-aarch64.pkg.tar.xz was not sufficient.

[klassikmann]

I just found at https://github.com/raspberrypi/linux/issues/4631:

Sorry guys - there was an upstream back-port introduced into 5.10.65 that required more downstream fixups for older platforms than were actually applied (the sdhost driver isn't normally used on Pi 4). Mea culpa.
The remaining patches are in rpi-5.10.y now, and we'll push out an rpi-update build later on.

[rern]

It's fixed.

[klassikmann]

Confirmed.