This is a note to let you know that I've just added the patch titled
thunderbolt: Introduce tb_path_deactivate_hop()
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
thunderbolt-introduce-tb_path_deactivate_hop.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From b35c1d7b11da8c08b14147bbe87c2c92f7a83f8b Mon Sep 17 00:00:00 2001
From: Sanath S <Sanath.S@xxxxxxx>
Date: Sat, 13 Jan 2024 11:42:23 +0200
Subject: thunderbolt: Introduce tb_path_deactivate_hop()
From: Sanath S <Sanath.S@xxxxxxx>
commit b35c1d7b11da8c08b14147bbe87c2c92f7a83f8b upstream.
This function can be used to clear path config space of an adapter. Make
it available for other files in this driver.
Signed-off-by: Sanath S <Sanath.S@xxxxxxx>
Signed-off-by: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx>
Cc: Mario Limonciello <mario.limonciello@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/thunderbolt/path.c | 13 +++++++++++++
drivers/thunderbolt/tb.h | 1 +
2 files changed, 14 insertions(+)
--- a/drivers/thunderbolt/path.c
+++ b/drivers/thunderbolt/path.c
@@ -446,6 +446,19 @@ static int __tb_path_deactivate_hop(stru
return -ETIMEDOUT;
}
+/**
+ * tb_path_deactivate_hop() - Deactivate one path in path config space
+ * @port: Lane or protocol adapter
+ * @hop_index: HopID of the path to be cleared
+ *
+ * This deactivates or clears a single path config space entry at
+ * @hop_index. Returns %0 in success and negative errno otherwise.
+ */
+int tb_path_deactivate_hop(struct tb_port *port, int hop_index)
+{
+ return __tb_path_deactivate_hop(port, hop_index, true);
+}
+
static void __tb_path_deactivate_hops(struct tb_path *path, int first_hop)
{
int i, res;
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -1100,6 +1100,7 @@ struct tb_path *tb_path_alloc(struct tb
void tb_path_free(struct tb_path *path);
int tb_path_activate(struct tb_path *path);
void tb_path_deactivate(struct tb_path *path);
+int tb_path_deactivate_hop(struct tb_port *port, int hop_index);
bool tb_path_is_invalid(struct tb_path *path);
bool tb_path_port_on_path(const struct tb_path *path,
const struct tb_port *port);
Patches currently in stable-queue which might be from Sanath.S@xxxxxxx are
queue-6.6/thunderbolt-reset-topology-created-by-the-boot-firmware.patch
queue-6.6/thunderbolt-introduce-tb_port_reset.patch
queue-6.6/thunderbolt-introduce-tb_path_deactivate_hop.patch
queue-6.6/thunderbolt-make-tb_switch_reset-support-thunderbolt-2-3-and-usb4-routers.patch
