Slackware changed their 5.11.8 configuration for 5.11.9. The simply turned off ADI_AXI_ADC and AD9467... To keep a copy of the original 5.11.8 configuration around for testing I saved it as an attachment to bugzilla 212433: https://bugzilla.kernel.org/show_bug.cgi?id=212433 https://bugzilla.kernel.org/attachment.cgi?id=296047