Kexec reboot does not reset PCI devices. If iwlwifi is left running, the next kernel can time out during probe, breaking networking after kexec: kernel: iwlwifi 0000:06:00.0: Host monitor block 0x22 vector 0x0 kernel: iwlwifi 0000:06:00.0: value [iter 0]: 0x00000000 kernel: iwlwifi 0000:06:00.0: probe with driver iwlwifi failed with error -110 Register iwl_pci_remove() as the PCI shutdown callback so the driver runs its normal teardown path before handing control to the next kernel. Signed-off-by: Li Chen --- drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c index dc99e7ac4726..c6d4079f7e1a 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c @@ -1325,6 +1325,7 @@ static struct pci_driver iwl_pci_driver = { .id_table = iwl_hw_card_ids, .probe = iwl_pci_probe, .remove = iwl_pci_remove, + .shutdown = iwl_pci_remove, .driver.pm = IWL_PM_OPS, .driver.coredump = iwl_pci_dump, }; -- 2.52.0