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Date: Wed, 19 Mar 2008 10:15:19 +0100 From: Stefan Richter <stefanr@...6.in-berlin.de> To: Thomas Meyer <thomas@...3r.de> CC: Adrian Bunk <bunk@...nel.org>, "Rafael J. Wysocki" <rjw@...k.pl>, LKML <linux-kernel@...r.kernel.org>, Andrew Morton <akpm@...ux-foundation.org>, Linus Torvalds <torvalds@...ux-foundation.org>, Natalie Protasevich <protasnb@...il.com> Subject: Re: 2.6.25-rc5: Reported regressions from 2.6.24 Thomas Meyer wrote: > Adrian Bunk schrieb: >> On Tue, Mar 11, 2008 at 01:22:42PM +0100, Stefan Richter wrote: >> >>> Rafael J. Wysocki wrote: >>> >>>> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=10080 I have reopened, re-assigned, and slightly renamed that bug now. >>>> Subject : 2.6.25-rc2: ohci1394 problem >>>> Submitter : Thomas Meyer <thomas@...3r.de> >>>> Date : 2008-02-20 08:47 >>>> References : http://lkml.org/lkml/2008/2/20/58 >>>> Handled-By : Stefan Richter <stefanr@...6.in-berlin.de> This bug is not handled by me. >>>> >>> Thomas wrote on 2008-02-25: >>> ''So i did a "make clean" and a "make" (not a make >>> -j3 as i use to do) and recompiled 2.6.25-rc3 and now it works again. >>> Case closed under strange error.'' >>> ... >>> >> >> Although I don't think this would cause the error, it would be nice if >> Thomas could verify that the -j3 did not cause the problem. >> > I still cannot *believe* this bug, but i just checked out the latest > kernel and did a make distclean and a make (with mr. bunks patch > applied) and there it is again: > $ dmesg > > (cut) > [ 464.852986] ohci1394: fw-host0: physical posted write error [...] > [ 464.898957] ohci1394: fw-host0: Unhandled interrupt(s) 0xfc7cfe0c > and so on.... > > $ git describe > v2.6.25-rc6-14-gbde4f8f > > As i already wrote: I tried to bisect this behavior, but with no result. > > And Stefan didn't change anything in the involved drivers. I have no > idea what could cause this kind of bug! The messages which Thomas posted result from ohci1394 getting ~0 (i.e. 0xffffffff) from some or all MMIO reads. This is not a FireWire driver bug. MMIO has been broken by something after 2.6.24. -- Stefan Richter -=====-==--- --== =--== http://arcgraph.de/sr/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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