From: "Martin Czamai" <Martin_Czamai AT peak-service DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: __dpmi_free_physical_address_mapping does not work - why?
Date: 28 Sep 1999 10:40:41 GMT
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To: djgpp AT delorie DOT com
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Reply-To: djgpp AT delorie DOT com

Hello!

When releasing the resources of a memory mapped device, why does
__dpmi_free_physical_address_mapping fail?

....
if(__dpmi_free_ldt_descriptor(Info.Selector) == SUCCESSFUL)
// workes fine!
      { DPMIInfo.address = Info.Linear;
// SUCCESSFUL is defined with 0
        if(__dpmi_free_physical_address_mapping(&DPMIInfo) == SUCCESSFUL)
// <--- fail! : return value: -1
        { return(true);         // everything worked fine!
        }else
        { return(false);        // unmapping failed
        }

Please send your solution(s) and/or comment(s) to
Martin_Czamai AT peak-service DOT com . Thank you!
best regards

Martin Czamai