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msm: ipa3: Added changes to check QMI pointer valid or not

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After passing ipa_q6_clnt pointer to function, if it freed in
different thread it may lead to NULL pointer access. So adding
check to see passed pointer valid or not.

Change-Id: I22e272ebdecc62756ee140081524ab4efdd3d02a
Signed-off-by: Ashok Vuyyuru <quic_avuyyuru@quicinc.com>
This commit is contained in:
Ashok Vuyyuru 2022-06-13 22:47:58 +05:30 • committed by Gerrit - the friendly Code Review server
commit f9a39ef50f
1 changed files with 4 additions and 2 deletions
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6
drivers/platform/msm/ipa/ipa_v3/ipa_qmi_service.c
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@ -469,8 +469,8 @@ static int ipa3_qmi_send_req_wait(struct qmi_handle *client_handle,
mutex_lock(&ipa3_qmi_lock);
if (!client_handle) {
if (client_handle != ipa_q6_clnt) {
IPADBG("Q6 QMI clinet pointer already freed\n");
mutex_unlock(&ipa3_qmi_lock);
return -EINVAL;
}
@ -1857,6 +1857,7 @@ void ipa3_qmi_service_exit(void)
workqueues_stopped = true;
IPADBG("Entry\n");
/* qmi-service */
if (ipa3_svc_handle != NULL) {
qmi_handle_release(ipa3_svc_handle);
@ -1889,6 +1890,7 @@ void ipa3_qmi_service_exit(void)
ipa3_qmi_indication_fin = false;
ipa3_modem_init_cmplt = false;
send_qmi_init_q6 = true;
IPADBG("Exit\n");
}
void ipa3_qmi_stop_workqueues(void)