Hi All, Commit 033fbae988fc ("mm: ZONE_DEVICE for "device memory"") has introduced CONFIG_ZONE_DEVICE while sacrificing CONFIG_ZONE_DMA. Distributions like Ubuntu has started enabling CONFIG_ZONE_DEVICE and thus breaking parallel port. Please have a look at https://bugzilla.kernel.org/show_bug.cgi?id=110931 for the bug report.
Apart from parallel port I can see some sound drivers will also break. Now what is the possible solution for this? Regards Sudip