evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

msm: ipa3: Protect access to ipa3_qmi_ctx variable by lock

Browse source 
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>
This commit is contained in:
Ghanim Fodi 2017-07-09 12:09:11 +03:00
parent 3ec8bfc9bb
commit 5c8cebfbe5
1 changed files with 3 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/platform/msm/ipa/ipa_v3/ipa_qmi_service.c
View file

@ -1177,10 +1177,13 @@ 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;