[PATCH] thunderbolt: Fix to check the return value of kmemdup

[Aditya Pakki]

uuid in add_switch is allocted via kmemdup which can fail. The patch
logs the error in such a scenario.

Signed-off-by: Aditya Pakki <pakki...@umn.edu>
---
 drivers/thunderbolt/icm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/thunderbolt/icm.c b/drivers/thunderbolt/icm.c
index e3fc920af682..8df8057cd79e 100644
--- a/drivers/thunderbolt/icm.c
+++ b/drivers/thunderbolt/icm.c
@@ -473,6 +473,7 @@ static void add_switch(struct tb_switch *parent_sw, u64 
route,
                goto out;
 
        sw->uuid = kmemdup(uuid, sizeof(*uuid), GFP_KERNEL);
+       WARN_ONCE(!sw->uuid, "%s: sw->uuid = NULL", __func__);
        sw->connection_id = connection_id;
        sw->connection_key = connection_key;
        sw->link = link;
-- 
2.17.1