> please try: > echo 1 > /sys/bus/pci/devices/0000:00:01.2/remove > before > echo 1 > /sys/bus/pci/rescan >than should work. Yinghai, sorry about the direct email on Friday, I tried to reply back to the newsgroup but the send kept failing. Your suggestion worked but only if there were no drivers attached to the endpoints. If I load the driver for the endpoint at bus 6.0 and 9.0, then load the empty FPGA at bus 8.0, which is off of 4.8, and write 1 to /sys/bus/pci/remove the system crashes. Is there a requirement that all down stream devices be removed? I could not find any such requirement in any documentation. Here is the most of the stack trace. kernel BUG at /mnt/disk2/home/tcarr/work-ubuntu-12.4-patch/drivers/pci/msi.c :316! invalid opcode: 0000 [#1] SMP Modules linked in: bdsfpga(P) bnep rfcomm bluetooth snd_hda_codec_realtek ftdi_sio ppdev snd_hda_intel snd_hda_codec snd_hwdep snd_pcm psmouse serio_raw parport_pc snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq i915 joydev snd_timer snd_seq_device mac_hid usbserial drm_kms_helper snd drm mei(C) i2c_algo_bit video soundcore snd_page_alloc lp parport usbhid hid e1000e floppy Pid: 74, comm: kworker/u:5 Tainted: P C O 3.2.0-25-generic-pae #40 To be filled by O.E.M. To be filled by O.E.M./To be filled by O.E.M. EIP: 0060:[<c12e28bc>] EFLAGS: 00010286 CPU: 2 EIP is at free_msi_irqs+0xec/0xf0 EAX: ea9968c0 EBX: ea996dc0 ECX: fffffffa EDX: 00000000 ESI: 00000000 EDI: 00000001 EBP: f6c4bec4 ESP: f6c4beb0 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Process kworker/u:5 (pid: 74, ti=f6c4a000 task=f6c58000 task.ti=f6c4a000) Stack: f7777800 f7777dc4 00000000 f7777800 ef71f080 f6c4becc c12e39cd f6c4bedc c12cce21 f7764e14 f7776800 f6c4beec c12cce91 f7764e00 f7776800 f6c4befc c12ccddf f7764414 f7774000 f6c4bf0c c12cce91 f7764400 f7774000 f6c4bf1c Call Trace: [<c12e39cd>] msi_remove_pci_irq_vectors+0x2d/0x40 [<c12cce21>] pci_remove_bus_device+0x61/0xa0 [<c12cce91>] pci_remove_behind_bridge+0x31/0x50 [<c12ccddf>] pci_remove_bus_device+0x1f/0xa0 [<c12cce91>] pci_remove_behind_bridge+0x31/0x50 [<c12ccddf>] pci_remove_bus_device+0x1f/0xa0 [<c12cce91>] pci_remove_behind_bridge+0x31/0x50 [<c12ccddf>] pci_remove_bus_device+0x1f/0xa0 [<c12d30bd>] remove_callback+0x1d/0x30 [<c11a5ec1>] sysfs_schedule_callback_work+0x11/0x60 [<c1074d41>] process_one_work+0x101/0x3a0 [<c11a5eb0>] ? sysfs_schedule_callback+0x1e0/0x1e0 [<c1075804>] worker_thread+0x124/0x2d0 [<c10756e0>] ? manage_workers.isra.27+0x110/0x110 [<c107962d>] kthread+0x6d/0x80 [<c10795c0>] ? flush_kthread_worker+0x80/0x80 [<c15b087e>] kernel_thread_helper+0x6/0x10 If you want to see the whole stack trace, can you tell me what the format of the return email should be so I can send an attachement. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
