Thanks, Robert. Sorry for not searching in the "right" place. Now I know.
On Tue, May 20, 2014 at 6:25 PM, Robert Nelson <robertcnel...@gmail.com>wrote: > On Tue, May 20, 2014 at 8:01 PM, Robert Nelson <robertcnel...@gmail.com> > wrote: > > On Tue, May 20, 2014 at 7:53 PM, <michael.du...@gmail.com> wrote: > >> RobertCNelson: > >> > >> I am running 2014-05-14 debian (flasher), and I can reliably generate a > >> kernel null pointer dereference using no more than > >> /sys/devices/bone_capemgr.*/slots and > /lib/firmware/BB-SPIDEV1-00A0.dtbo. > > > > Yes and No... You got a null pointer dereference when you "unloaded a > > cape", which is a long time old known issue. The "only" way to > > properly unload a cape is to reboot with the v3.8.x based kernel. > > > >> Any interest? If so, please see: > >> https://groups.google.com/forum/#!topic/beaglebone/RpozbQ0gGH0 > > > > Ah, i see. So you guys are on the "other" forum, if you would have > > searched the main one (this one) you would have seen this old issue > > discussed a few times over the last year. > > to follow up: > > root@am335x-boneblack-512mb-0:/home/voodoo# uname -r > 3.8.13-bone54 > > root@am335x-boneblack-512mb-0:/home/voodoo# export > SLOTS=/sys/devices/bone_capemgr.9/slots > root@am335x-boneblack-512mb-0:/home/voodoo# cat $SLOTS > 0: 54:PF--- > 1: 55:PF--- > 2: 56:PF--- > 3: 57:PF--- > 4: ff:P-O-- Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G > 5: ff:P-O-- Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI > 6: ff:P-O-- Bone-Black-HDMIN,00A0,Texas Instrument,BB-BONELT-HDMIN > > root@am335x-boneblack-512mb-0:/home/voodoo# echo BB-SPIDEV1 > $SLOTS > > [ 96.506849] bone-capemgr bone_capemgr.9: part_number 'BB-SPIDEV1', > version 'N/A' > [ 96.516565] bone-capemgr bone_capemgr.9: slot #7: generic override > [ 96.523225] bone-capemgr bone_capemgr.9: bone: Using override > eeprom data at slot 7 > [ 96.531389] bone-capemgr bone_capemgr.9: slot #7: 'Override Board > Name,00A0,Override Manuf,BB-SPIDEV1' > [ 96.541719] bone-capemgr bone_capemgr.9: slot #7: Requesting part > number/version based 'BB-SPIDEV1-00A0.dtbo > [ 96.552162] bone-capemgr bone_capemgr.9: slot #7: Requesting > firmware 'BB-SPIDEV1-00A0.dtbo' for board-name 'Override Board Name', > version '00A0' > [ 96.570136] bone-capemgr bone_capemgr.9: slot #7: dtbo > 'BB-SPIDEV1-00A0.dtbo' loaded; converting to live tree > [ 96.581977] bone-capemgr bone_capemgr.9: slot #7: #2 overlays > [ 96.629134] edma-dma-engine edma-dma-engine.0: allocated channel for > 0:45 > [ 96.643245] edma-dma-engine edma-dma-engine.0: allocated channel for > 0:44 > [ 96.692195] edma-dma-engine edma-dma-engine.0: allocated channel for > 0:43 > [ 96.706484] edma-dma-engine edma-dma-engine.0: allocated channel for > 0:42 > [ 96.725354] bone-capemgr bone_capemgr.9: slot #7: Applied #2 overlays. > > root@am335x-boneblack-512mb-0:/home/voodoo# ls /dev/spidev1.* > /dev/spidev1.0 /dev/spidev1.1 > > > works for me.. > > Regards, > > -- > Robert Nelson > http://www.rcn-ee.com/ > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/beagleboard/VRqGZbXBK1Q/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > beagleboard+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
