The PSOGM on the ASUS TUF A15 was a page fault in cprintf, from probe(),
in the touchpad driver's own success message. cprintf had no field widths:
"%04x" printed literally and consumed no argument, so the "%s" after it
was handed the product ID as a string pointer. "%lx" misprinted the same
way -- "0x4275838976x" for 0xFEDC2000 -- on the line before.
The driver's formats are fixed, and cprintf now steps over flags and
widths and takes l/ll/z as 64-bit, so a directive it does not render can
no longer shift every argument after it. Until now any %ld or %lu printed
the number followed by a stray letter.
The touchpad on/off entry in the boot menu has served its purpose and is
gone; the verbose step trace stays.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S1giNvrHTrPMPw7V6x1kQ4
5ea03c4cf5