Commit 4944666a authored Jul 09, 2017 by Ghanim Fodi Committed by Gerrit - the friendly Code Review server Jul 12, 2017

msm: ipa3: Protect access to ipa3_qmi_ctx variable by lock



ipa3_qmi_ctx is a global variable that may be accessed by
different worker threads. Protect the access to it
using mutex lock so that the access will be always atomic.

Change-Id: Iaf0c95d66817833c8e8123b12e94a7a01ab8df2c
CRs-fixed: 2056414
Signed-off-by: Ghanim Fodi <gfodi@codeaurora.org>

parent eb61a053

drivers/platform/msm/ipa/ipa_v3/ipa_qmi_service.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -1253,10 +1253,13 @@ void ipa3_qmi_service_exit(void)
		}

		/* clean the QMI msg cache */
		mutex_lock(&ipa3_qmi_lock);
		if (ipa3_qmi_ctx != NULL) {
		vfree(ipa3_qmi_ctx);
		ipa3_qmi_ctx = NULL;
		}
		mutex_unlock(&ipa3_qmi_lock);

		ipa3_svc_handle = 0;
		ipa3_qmi_modem_init_fin = false;
		ipa3_qmi_indication_fin = false;