[Bug 110354] Confusing Junk in the results: Last errno: 25, Inappropriate ioctl for device

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110354

            Bug ID: 110354
           Summary: Confusing Junk in the results: Last errno: 25,
                    Inappropriate ioctl for device
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: IGT
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: arkadiusz.hiler at intel.com

IGT's asserts log the last errno if it's not 0, and it seems like we get this
"Inappropriate ioctl for device" quite often polluting the CI results and
confusing people. 

We have to locate where is it originating from and set errno to 0 after
handling it to stop the pollution.

Some examples:
https://bugs.freedesktop.org/show_bug.cgi?id=109358
https://bugs.freedesktop.org/show_bug.cgi?id=110037
https://bugs.freedesktop.org/show_bug.cgi?id=110279

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