On Sun, 2013-03-10 at 01:26 +0100, Phileas Fogg wrote: > i managed to find the bad commit after a couple of days bisecting.
Thanks ! > ---------------------------- > 44ae3ab3358e962039c36ad4ae461ae9fb29596c is the first bad commit > commit 44ae3ab3358e962039c36ad4ae461ae9fb29596c > Author: Matt Evans <m...@ozlabs.org> > Date: Wed Apr 6 19:48:50 2011 +0000 > > powerpc: Free up some CPU feature bits by moving out MMU-related > features > > Some of the 64bit PPC CPU features are MMU-related, so this patch moves > them to MMU_FTR_ bits. All cpu_has_feature()-style tests are moved to > mmu_has_feature(), and seven feature bits are freed as a result. > > Signed-off-by: Matt Evans <m...@ozlabs.org> > Signed-off-by: Benjamin Herrenschmidt <b...@kernel.crashing.org> > -------------------------------- Have you verified that if you checkout git at the above commit point, it fails and if you then just revert that commit on top, it works again ? The above should have been mostly a NOP change but I'll have a closer look in case a typo of some kind actually broke something. > Actually, there are 2 problems i found. > The first problem occurs when i enable IDE CDROM driver on my machine. > The following commit causes hangs on my machine at boot: Ok. You may want to switch to the new libata instead of the old IDE driver too (CONFIG_IDE off, CONFIG_ATA on, CONFIG_PATA_MACIO on and from there it will use the SCSI CDROM driver). > ---------------------- > commit 5b03a1b140e13a28ff6be1526892a9dc538ddef6 > Author: Tejun Heo <t...@kernel.org> > Date: Wed Mar 9 19:54:27 2011 +0100 > > ide: Convert to bdops->check_events() > > Convert ->media_changed() to the new ->check_events() method. The > conversion is mostly mechanical. The only notable change is that > cdrom now doesn't generate any event if @slot_nr isn't CDSL_CURRENT. > It used to return -EINVAL which would be treated as media changed. As > media changer isn't supported anyway, this doesn't make any > difference. > > This makes ide emit the standard disk events and allows kernel event > polling. Currently, only MEDIA_CHANGE event is implemented. Adding > support for EJECT_REQUEST shouldn't be difficult; however, given that > ide driver is already deprecated, it probably is best to leave it > alone. > > Signed-off-by: Tejun Heo <t...@kernel.org> > ---------------------------- > > > > > If i disable IDE CDROM driver then the Linux kernel boots again > and then it hits the commit 44ae3ab3358e962039c36ad4ae461ae9fb29596c > and hangs again :) > > The commit eca590f402332ab873d13f2d8d00fa0b91cfff36 which is before > the commit 44ae3ab3358e962039c36ad4ae461ae9fb29596c works fine, > i tested it myself to be on the safe side. Ok thanks. I'll dig a bit if I get a chance next week. Cheers, Ben. > > > Regards _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
