From: Maxim Levitsky <mlevitsk@redhat.com>
Date: Wed, 20 May 2020 21:52:21 +0300
Subject: thunderbolt: Add trivial .shutdown
Git-commit: 4caf2511ec498277333d229f8a7ad1fa9331df65
Patch-mainline: v5.8-rc1
References: jsc#SLE-14130

On my machine, a kexec with this driver loaded in the old kernel causes
a very long delay on boot in the kexec'ed kernel, most likely due to
unclean shutdown prior to that.

Unloading thunderbolt driver prior to kexec allows kexec to work as fast
as regular kernel boot, as well as adding this .shutdown pointer.

Shutting a device prior to the shutdown completely is always a good idea
IMHO to help with kexec, and this one-liner patch implements it.

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
---
 drivers/thunderbolt/nhi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/thunderbolt/nhi.c b/drivers/thunderbolt/nhi.c
index 2e51d06e8e8d..d299dc168147 100644
--- a/drivers/thunderbolt/nhi.c
+++ b/drivers/thunderbolt/nhi.c
@@ -1289,6 +1289,7 @@ static struct pci_driver nhi_driver = {
 	.id_table = nhi_ids,
 	.probe = nhi_probe,
 	.remove = nhi_remove,
+	.shutdown = nhi_remove,
 	.driver.pm = &nhi_pm_ops,
 };