If the service locator server is restarted fast enough, the PDR can
rewrite locator_addr fields concurrently. Protect them by placing
modification of those fields under the main pdr->lock.
Fixes: fbe639b44a82 ("soc: qcom: Introduce Protection Domain Restart helpers")
Signed-off-by: Dmitry Baryshkov <[email protected]>
---
drivers/soc/qcom/pdr_interface.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/soc/qcom/pdr_interface.c b/drivers/soc/qcom/pdr_interface.c
index a1b6a4081dea..7b5fdf9fd3d7 100644
--- a/drivers/soc/qcom/pdr_interface.c
+++ b/drivers/soc/qcom/pdr_interface.c
@@ -76,12 +76,12 @@ static int pdr_locator_new_server(struct qmi_handle *qmi,
locator_hdl);
struct pdr_service *pds;
+ mutex_lock(&pdr->lock);
/* Create a local client port for QMI communication */
pdr->locator_addr.sq_family = AF_QIPCRTR;
pdr->locator_addr.sq_node = svc->node;
pdr->locator_addr.sq_port = svc->port;
- mutex_lock(&pdr->lock);
pdr->locator_init_complete = true;
mutex_unlock(&pdr->lock);
@@ -104,10 +104,10 @@ static void pdr_locator_del_server(struct qmi_handle *qmi,
mutex_lock(&pdr->lock);
pdr->locator_init_complete = false;
- mutex_unlock(&pdr->lock);
pdr->locator_addr.sq_node = 0;
pdr->locator_addr.sq_port = 0;
+ mutex_unlock(&pdr->lock);
}
static const struct qmi_ops pdr_locator_ops = {
@@ -133,11 +133,13 @@ static int pdr_register_listener(struct pdr_handle *pdr,
req.enable = enable;
strscpy(req.service_path, pds->service_path, sizeof(req.service_path));
+ mutex_lock(&pdr->lock);
ret = qmi_send_request(&pdr->notifier_hdl, &pds->addr,
&txn, SERVREG_REGISTER_LISTENER_REQ,
SERVREG_REGISTER_LISTENER_REQ_LEN,
servreg_register_listener_req_ei,
&req);
+ mutex_unlock(&pdr->lock);
if (ret < 0) {
qmi_txn_cancel(&txn);
return ret;
--
2.39.2
