From 1b0a2f4b670b533f2a6727e2feb3abb313cfe612 Mon Sep 17 00:00:00 2001 From: Sanath S Date: Sat, 13 Jan 2024 11:42:23 +0200 Subject: thunderbolt: Introduce tb_path_deactivate_hop() 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 Signed-off-by: Mika Westerberg Cc: Mario Limonciello Signed-off-by: Greg Kroah-Hartman --- drivers/thunderbolt/path.c | 13 +++++++++++++ drivers/thunderbolt/tb.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/thunderbolt/path.c b/drivers/thunderbolt/path.c index 091a81bbdbdc..f760e54cd9bd 100644 --- a/drivers/thunderbolt/path.c +++ b/drivers/thunderbolt/path.c @@ -446,6 +446,19 @@ static int __tb_path_deactivate_hop(struct tb_port *port, int hop_index, 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; diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h index 551d2cf625cd..f41604c2c4dd 100644 --- a/drivers/thunderbolt/tb.h +++ b/drivers/thunderbolt/tb.h @@ -1154,6 +1154,7 @@ struct tb_path *tb_path_alloc(struct tb *tb, struct tb_port *src, int src_hopid, 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); -- cgit v1.2.3