[Linux-parport] [PATCH/RFC] parport_pc: remove ancient, overeager quirk that disables EPP support on many chipsets
greg at kroah.com
Thu Sep 15 06:16:43 EDT 2011
On Thu, Sep 15, 2011 at 11:33:18AM +0200, Leopold Palomo-Avellaneda wrote:
> 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 vanilla kernels and
> runs perfectly. The patch simply erases a check. Applied to some Dell
> hardware, now the EPP mode is detected and, after some initial tests it's
> Please, apply the patch.
Please resend it with the proper Signed-off-by: line, as described by
Documentation/SubmittingPatches and we will be glad to consider it.
More information about the Linux-parport