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 <me@linux.beauty>
---
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