[Linux-parport] The Intel parport bug
leo at alaxarxa.net
Wed Jun 15 08:56:37 EDT 2011
there's a bug in the parport module that have been reported (in another
places) some time ago . Also, this bug was reported at Redhat , but
nobody follow the report and it was closed.
As Adam baked said  :
A long time ago (~ 10 years), Intel produced a chipset that
included broken EPP support. The Linux parport driver was written to detect
such a chipset and disable EPP support on it. Unfortunately the test that was
written gives false positives for many current chipsets and no-one seems to
know exactly what the problem hardware was, let alone have a sample of it to
see if a better test can be written. After such a long time it is probably
appropriate to just remove the test (on average it does more harm than good)
however you are correct in asserting the driver is unmaintained so no-one is
bothering to fix it.
I have applied the patch to the standard debian kernel and it compiles and
runs perfectly. Applied to some Dell hardware, now the EPP mode is detected
and, after some initial tests it's working.
I don't have any hope that it would be solved in the linux kernel, but at
least in the debian kernel it could be applied.
Please, apply the patch.
Linux User 152692
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