Dne pondělí 16 duben 2007 17:34 Michael Krufky napsal(a): > Adrian Bunk wrote: > > On Sun, Apr 15, 2007 at 08:33:38PM -0400, Michael Krufky wrote: > >> Mauro, > >> > >> I've been out of town for the past few days... I just got home and saw > >> this: > >> > >> Mauro Carvalho Chehab wrote: > >>> - Fix 1/3 for bug 7819: fixed frontend hotplug issue > >>> - Fix 2/3 for bug 7819: demux and dvr > >>> - Fix 3/3 for bug 7819: fixed hotplugging for dvbnet > >> > >> I don't think that this is 2.6.21 material. These patches have not yet > >> received > >> enough testing to be sent to mainline. > >> > >> I have tested them, and they seem to work for my cxusb device, but we > >> have yet to hear test results from users of usb dvb devices that do not > >> use the dvb-usb framework. (ttusb, flexcop-usb, cinergyT2, for example) > >> > >> The bug that these patches fix has been around throughout the entire > >> kernel history of the dvb subsystem. The bug is not a regression -- it > >> has always been > >> there. In my opinion, it is too late in 2.6.21 development to apply > >> this change. > >> Because these fixes are not obvious, I think we should let them get some > >> more testing, and have them queued for 2.6.22 . > > > > Unless I misunderstand anything, this should fix [1]. > > > > And this is a bug that was reported to be present in 2.6.21-rc but not > > in 2.6.20 (and it's therefore a regression, no matter whether the > > underlying problem was older and only exposed by some other change). > > Not true. The DVB subsystem has NEVER been hot-unpluggable. I confirm > that the patches SEEM to be correct, but this has not yet been verified. > None of the authors of dvb-core gave their ACK on these changesets. > > The DVB hotplug issue has been around since the very beginning. I assure > you, that I consider this fix to be very important, and I really would love > to see it hit mainline. However, given the situation, it is not > appropriate to push these in during -rc7 > > I have doubts on CIJOML's testing method -- there is no way he could have > unplugged the device while in use, while running 2.6.20.y and not receive > an OOPS. CIJOML, please see the bottom of this email for > > Sure, this will prevent an OOPS on some, and hopefully all devices... but > what if it causes a regression for those untested? > > Why do we have a merge window, if new changesets are going to be rushed > into late -rc kernels without proper testing, and without the ack of a dvb > subsystem maintainer? > > Are we prepared to go for another -rc and 3 or 4 weeks of testing to > confirm that this fix doesn't cause new regressions? I don't think so. > > Markus Rechberger wrote: > > The patch has been around on the dvb mailinglist ([PATCH][RFC] DVB > > Hotplug Fix, 5. April 2007), > > The patch was merged into the development repository at the same time the > pull request was issued to Linus. This has NOT been tested on a wide > scale. It should go to -mm for a while before being merged to mainline. > > Mauro Carvalho Chehab wrote: > > I also explicitly warned at DVB ML that I were about to send this patch, > > together with other fixes, asking the community for more tests. After > > that, I received two positive answers on my mailbox from people that > > tested and noticed that this really fixed the issue. > > One of those positive answers was me - I explained that it worked for me, > but we need others to test. > > You waited ONE DAY after sending this "warning" to the dvb mailing list? ( > http://linuxtv.org/pipermail/linux-dvb/2007-April/017204.html ) I saw that > email after seeing the pull request to Linus. We dont have users testing > the repositories after each commit -- you _really_ need to give some more > time to allow for such testing. > > CIJOML wrote: > > Hi, > > > > I have tested these patches with: > > > > Freecom DVB-T dongle > > Pluto2 pcmcia card > > Leadtek WinFast DTV dongle 1st generation > > Leadtek WinFast DTV dongle 2nd generation > > > > These are 4 different devices with 4 different hw and modules. > > All works. Please apply. > > Well, that helps... But it would still be nice to hear test results on a > CinergyT2 or flexcop-usb. > > Which driver supports those Winfast dongles? We already know for sure that > the patches work correctly for any driver based on the dvb-usb framework. > > If you had the device open, and then disconnect it from the usb bus, no > matter what kernel version you're running, you should hit the OOPS. I > confirm that these patches prevent that OOPS from occurring, but I have > trouble believing that you did NOT experience such an OOPS in 2.6.20.y > > Could you please describe the method in which your test caused an OOPS > using 2.6.21-rc and did NOT cause an oops in 2.6.20.y ?
Hi, I have tested these patches with 2.6.20-mh1 + v4l-dvb-b5be3479f070 patchset. I also tried 2.6.21-rc6 + v4l-dvb-b5be3479f070 patchset and this combination also works without OOPS. Winfast dongles are both dvb-usb based (DiBcom 3000M-C and DiBcom DiB7000P), but pluto2 is cardbus (pci) based. I think we can include these patches into 2.6.21 and if we receive any problem, we still have 2.6.21.Z for fixing, don't we? Michal - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/