msm: ipa3: Fix to release IPA clock during ap suspend
When AP is going to suspend, there is a possibility that
IPA clock is released twice due to sps_release_resource being
called from 2 contexts. Make a change to protect
sps_release_resource to make sure IPA clock is released
only once.
CRs-Fixed: 1008230
Change-Id: I39a806ee6c5c836928bc07295d17e12108836709
Acked-by: Chaitanya Pratapa <cpratapa@qti.qualcomm.com>
Signed-off-by: Sridhar Ancha <sancha@codeaurora.org>
diff --git a/drivers/platform/msm/ipa/ipa_v3/ipa_i.h b/drivers/platform/msm/ipa/ipa_v3/ipa_i.h
index 4f6bf55..bec0b27 100644
--- a/drivers/platform/msm/ipa/ipa_v3/ipa_i.h
+++ b/drivers/platform/msm/ipa/ipa_v3/ipa_i.h
@@ -979,6 +979,7 @@
* @lock: lock for ensuring atomic operations
* @res_granted: true if SPS requested IPA resource and IPA granted it
* @res_rel_in_prog: true if releasing IPA resource is in progress
+ * @transport_pm_mutex: Mutex to protect the transport_pm functionality.
*/
struct ipa3_transport_pm {
spinlock_t lock;
@@ -986,6 +987,7 @@
bool res_rel_in_prog;
atomic_t dec_clients;
atomic_t eot_activity;
+ struct mutex transport_pm_mutex;
};
/**