Hi, After upgrading to the latest RC I noticed that suprise removal stopped working. Linux did not notice that the devices where gone. Bisection points to 1f42db786b14a31bf807fc41ee5583a00c08fcb1 PCI: Enable INTx if BIOS left them disabled http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1f42db786b14a31bf807fc41ee5583a00c08fcb1 It seems that the above patch is triggered on the bridge itself (!) when a new device is added below it. At this point the hotplug driver for the bridge has already enabled MSI. Reenabling INTX kills MSI and prevents later suprise removal notifications. The following stacktrace is from a "echo 1 > rescan" on the bridge: do_pci_enable_device+0x59/0x140 pci_reenable_device+0x1f/0x30 pci_assign_unassigned_bridge_resources+0x123/0x160 pci_rescan_bus_bridge_resize+0x28/0x40 dev_bus_rescan_store+0x85/0xa0 dev_attr_store+0x18/0x30 sysfs_kf_write+0x3d/0x50 kernfs_fop_write+0xd2/0x140 vfs_write+0xba/0x1e0 SyS_write+0x49/0xa0 system_call_fastpath+0x1a/0x1f Similarly for a hotplug event: do_pci_enable_device+0x59/0x140 pci_reenable_device+0x1f/0x30 pci_assign_unassigned_bridge_resources+0x123/0x160 pciehp_configure_device+0x90/0x160 pciehp_enable_slot+0x163/0x280 pciehp_power_thread+0xb8/0xe0 process_one_work+0x167/0x420 worker_thread+0x121/0x3a0 In both cases DisINTx is turned off and the hotplug driver stops reacting to events. Andreas -- 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
