Messages in this thread | | | From | "Leopold Palomo-Avellaneda" <> | Subject | Re: [PATCH/RFC] parport_pc: remove ancient, overeager quirk that disables EPP support on many chipsets | Date | Fri, 16 Sep 2011 12:39:40 +0200 |
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A Dijous, 15 de setembre de 2011, Bastien ROUCARIES va escriure: > On Thu, Sep 15, 2011 at 3:41 PM, Bastien ROUCARIES > <roucaries.bastien@gmail.com> wrote: > > On Thu, Sep 15, 2011 at 2:41 PM, Leopold Palomo-Avellaneda > > <leo@alaxarxa.net> wrote: > >> Hi again, > >> > >> sorry for the noise and my mistake. The patch... > >> > >> there's a bug in the parport module that have been reported (in another > >> places) some time ago [1]. Also, this bug was reported at Redhat [2], but > >> nobody follow the report and it was closed. > > Moreover they are more detail about this bug here you should contact > davbid campell > > http://lists.infradead.org/pipermail/linux-parport/2004-March/000048.html
I think that this is a good approach, but it seems that this patch go to nowhere.... also solves another question of timeouts.
Leo
> Bastien > > >> As Adam Baker said [1] : > >> > >> <quote> > >> A long time ago (~ 10 years), Intel produced a chipset that > > > > Why not check dmi years for this test and do the test only for board > > before 2000 ? Better safe than sorry > > > > Bastien > > > > > > > >> 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. > >> </quote> > >> > >> 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 > >> working. > >> > >> Please, apply the patch. > >> > >> Best regards, > >> > >> Leo > >> > >> [1] http://lists.infradead.org/pipermail/linux-parport/2008- March/000628.html > >> [2] https://bugzilla.redhat.com/show_bug.cgi?id=284471 > >> > >> > >> Signed-off-by: Adam Baker <linux at baker-net.org.uk> > >> Signed-off-by: Leopold Palomo-Avellaneda <leo@alaxarxa.net> > >> > >> > >> --- > >> > > >
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