Date: Wed, 9 Jul 2003 17:40:06 +0200 From: Maxime Henrion <mux@freebsd.org> To: Mark Murray <mark@grondar.org> Cc: current@freebsd.org Subject: Re: Broken ep0 Message-ID: <20030709154006.GG42121@elvis.mu.org> In-Reply-To: <200307091534.h69FYXbN079580@grimreaper.grondar.org>
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Mark Murray wrote: > Hi > > Since your last round of changes to if_ep.c (up to 1.117), the pccard ep0 > on my ToPIC97 based laptop is broken. > > I've chatted to Warner about this, and I have a local hack where I back > out a fix of his, and this allows the ep0 device to work (I think he said > there was a race condition in the interrupts). > > Can you have a look at this please? > > The symptoms are an ep0 that works for a few packets and then completely > stops working. It doesn't respond to pings, nothing. I think you and/or Warner got mistaken. My last round of changes to if_ep.c _fixed_ some race conditions that previously weren't a problem, but became a problem once Warner flag'd the pccbb interrupts INTR_MPSAFE. It's very possible that there are other problems left in the ep(4) driver, but I highly doubt my changes to if_ep.c are the culprit. I'm sorry but I can't do anything for you since I don't even have ep(4) hardware here ; I was able to fix the race conditions mentioned above because people reported panics with stacktrace that made the problem obvious. Cheers, Maximehome | help
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