[Bug 49788] New: mountmgr is no longer detecting SCSI devices

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49788

Bug ID: 49788
           Summary: mountmgr is no longer detecting SCSI devices
           Product: Wine
           Version: 5.16
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: mountmgr.sys
          Assignee: [e-mail]
          Reporter: [e-mail]
   Regression SHA1: 19549d11a72f63efe0d689374446a56a68264a1f
      Distribution: ---

Created attachment 68104
  --> https://bugs.winehq.org/attachment.cgi?id=68104
regedit screenshot

Commit 19549d11a72f63efe0d689374446a56a68264a1f switched to using udisks2 to
detect devices, however this no longer detects SCSI devices.
This results in ASPI_GetNumControllers always returning 0, and ASPI
applications not detecting any optical drives.

Compiling wine one commit before the one mentioned above
(8388ea840fedbb9b646213a26cd59ceb3a48680b) restores the ability to detect and
use SCSI devices.

Tested on two different Ubuntu 20.04 installations, both with fully functional
udisks2.

Steps to reproduce: 
Start up wine regedit
Navigate to HKLM\Hardware\DEVICEMAP\Scsi
Observe that it is empty

When functioning correctly, it should report all SCSI devices, including hard
disks and optical drives. In general, all devices that exist in /proc/scsi/scsi
should show up in the registry.

https://bugs.winehq.org/show_bug.cgi?id=31592 was opened presumably to move
away from /proc/scsi, however it is now a regression.