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authorSanath S <Sanath.S@amd.com>2024-01-13 12:42:23 +0300
committerMika Westerberg <mika.westerberg@linux.intel.com>2024-01-22 14:21:06 +0300
commitb35c1d7b11da8c08b14147bbe87c2c92f7a83f8b (patch)
treef07f396edfc673f9a00b48f0cf662538642a7895 /drivers/thunderbolt
parent01da6b99d49f60b1edead44e33569b1a2e9f49b7 (diff)
downloadlinux-b35c1d7b11da8c08b14147bbe87c2c92f7a83f8b.tar.xz
thunderbolt: Introduce tb_path_deactivate_hop()
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@amd.com> Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Diffstat (limited to 'drivers/thunderbolt')
-rw-r--r--drivers/thunderbolt/path.c13
-rw-r--r--drivers/thunderbolt/tb.h1
2 files changed, 14 insertions, 0 deletions
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 c38b047ba14b..2c689e3b02b9 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -1150,6 +1150,7 @@ 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);