Revert "msm: kgsl: Add per context timestamp"

This reverts commit 2a811252c73a9beae002c95cdeef974f8be0579f.

Change-Id: Ic3018f19eb1a089ae67e0f3c253cc00e7d0285e3
Signed-off-by: Wei Zou <wzou@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_device.h b/drivers/gpu/msm/kgsl_device.h
index d63709d..2eacf22 100644
--- a/drivers/gpu/msm/kgsl_device.h
+++ b/drivers/gpu/msm/kgsl_device.h
@@ -76,10 +76,9 @@
 		enum kgsl_property_type type, void *value,
 		unsigned int sizebytes);
 	int (*waittimestamp) (struct kgsl_device *device,
-		struct kgsl_context *context, unsigned int timestamp,
-		unsigned int msecs);
+		unsigned int timestamp, unsigned int msecs);
 	unsigned int (*readtimestamp) (struct kgsl_device *device,
-		struct kgsl_context *context, enum kgsl_timestamp_type type);
+		enum kgsl_timestamp_type type);
 	int (*issueibcmds) (struct kgsl_device_private *dev_priv,
 		struct kgsl_context *context, struct kgsl_ibdesc *ibdesc,
 		unsigned int sizedwords, uint32_t *timestamp,
@@ -124,9 +123,8 @@
 };
 
 struct kgsl_event {
-	struct kgsl_context *context;
 	uint32_t timestamp;
-	void (*func)(struct kgsl_device *, void *, u32, u32);
+	void (*func)(struct kgsl_device *, void *, u32);
 	void *priv;
 	struct list_head list;
 	struct kgsl_device_private *owner;
@@ -158,7 +156,6 @@
 	uint32_t state;
 	uint32_t requested_state;
 
-	unsigned int last_expired_ctxt_id;
 	unsigned int active_cnt;
 	struct completion suspend_gate;
 
@@ -333,8 +330,7 @@
 	return  (ctxt && ctxt->dev_priv == dev_priv) ? ctxt : NULL;
 }
 
-int kgsl_check_timestamp(struct kgsl_device *device,
-		struct kgsl_context *context, unsigned int timestamp);
+int kgsl_check_timestamp(struct kgsl_device *device, unsigned int timestamp);
 
 int kgsl_register_ts_notifier(struct kgsl_device *device,
 			      struct notifier_block *nb);