The cros_unregister_ports() function can be called in situations where
the partner has not been registered yet, and so its related data
structures would not have been initialized. Calling
cros_typec_remove_partner() in such a situation can lead to null pointer
dereferences. So, only call cros_typec_remove_partner() if there is a
valid registered partner pointer.
Signed-off-by: Prashant Malani <pmal...@chromium.org>
---
Changes in v2:
- No changes.
drivers/platform/chrome/cros_ec_typec.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/platform/chrome/cros_ec_typec.c
b/drivers/platform/chrome/cros_ec_typec.c
index 49083e21317d..2665d8125910 100644
--- a/drivers/platform/chrome/cros_ec_typec.c
+++ b/drivers/platform/chrome/cros_ec_typec.c
@@ -190,7 +190,10 @@ static void cros_unregister_ports(struct cros_typec_data
*typec)
for (i = 0; i < typec->num_ports; i++) {
if (!typec->ports[i])
continue;
- cros_typec_remove_partner(typec, i);
+
+ if (typec->ports[i]->partner)
+ cros_typec_remove_partner(typec, i);
+
usb_role_switch_put(typec->ports[i]->role_sw);
typec_switch_put(typec->ports[i]->ori_sw);
typec_mux_put(typec->ports[i]->mux);
--
2.29.1.341.ge80a0c044ae-goog
