linux-kernel - [PATCH v2 03/11] staging/android: remove .fill_driver

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Date:	Wed, 27 Jan 2016 11:30:31 -0200
From:	Gustavo Padovan <gustavo@...ovan.org>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:	linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
	dri-devel@...ts.freedesktop.org,
	Daniel Stone <daniels@...labora.com>,
	Arve Hjønnevåg <arve@...roid.com>,
	Riley Andrews <riandrews@...roid.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Rob Clark <robdclark@...il.com>,
	Greg Hackmann <ghackmann@...gle.com>,
	John Harrison <John.C.Harrison@...el.com>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Gustavo Padovan <gustavo.padovan@...labora.co.uk>
Subject: [PATCH v2 03/11] staging/android: remove .fill_driver_data() timeline ops

From: Gustavo Padovan <gustavo.padovan@...labora.co.uk>

The .fill_driver_data() ops was just a useless abstraction for
fence_ops op of the same name.

Now that we use fence->seqno to store the value it is cleaner to
remove the abstraction and fill the data directly.

Signed-off-by: Gustavo Padovan <gustavo.padovan@...labora.co.uk>
---
 drivers/staging/android/sw_sync.c | 14 --------------
 drivers/staging/android/sync.c    |  9 +++++----
 drivers/staging/android/sync.h    |  7 -------
 3 files changed, 5 insertions(+), 25 deletions(-)

diff --git a/drivers/staging/android/sw_sync.c b/drivers/staging/android/sw_sync.c
index b9d53d3..428e22c 100644
--- a/drivers/staging/android/sw_sync.c
+++ b/drivers/staging/android/sw_sync.c
@@ -38,19 +38,6 @@ struct fence *sw_sync_pt_create(struct sw_sync_timeline *obj, u32 value)
 }
 EXPORT_SYMBOL(sw_sync_pt_create);
 
-static int sw_sync_fill_driver_data(struct fence *fence,
-				    void *data, int size)
-{
-	struct sw_sync_pt *pt = (struct sw_sync_pt *)fence;
-
-	if (size < sizeof(pt->value))
-		return -ENOMEM;
-
-	memcpy(data, &pt->value, sizeof(pt->value));
-
-	return sizeof(pt->value);
-}
-
 static void sw_sync_timeline_value_str(struct sync_timeline *sync_timeline,
 				       char *str, int size)
 {
@@ -68,7 +55,6 @@ static void sw_sync_fence_value_str(struct fence *fence, char *str, int size)
 
 static struct sync_timeline_ops sw_sync_timeline_ops = {
 	.driver_name = "sw_sync",
-	.fill_driver_data = sw_sync_fill_driver_data,
 	.timeline_value_str = sw_sync_timeline_value_str,
 	.fence_value_str = sw_sync_fence_value_str,
 };
diff --git a/drivers/staging/android/sync.c b/drivers/staging/android/sync.c
index 4eea5c3..39af5fb 100644
--- a/drivers/staging/android/sync.c
+++ b/drivers/staging/android/sync.c
@@ -185,11 +185,12 @@ static bool android_fence_enable_signaling(struct fence *fence)
 static int android_fence_fill_driver_data(struct fence *fence,
 					  void *data, int size)
 {
-	struct sync_timeline *parent = fence_parent(fence);
+	if (size < sizeof(fence->seqno))
+		return -ENOMEM;
+
+	memcpy(data, &fence->seqno, sizeof(fence->seqno));
 
-	if (!parent->ops->fill_driver_data)
-		return 0;
-	return parent->ops->fill_driver_data(fence, data, size);
+	return sizeof(fence->seqno);
 }
 
 static void android_fence_value_str(struct fence *fence,
diff --git a/drivers/staging/android/sync.h b/drivers/staging/android/sync.h
index 4d3dfbf..500838b 100644
--- a/drivers/staging/android/sync.h
+++ b/drivers/staging/android/sync.h
@@ -27,10 +27,6 @@ struct sync_timeline;
 /**
  * struct sync_timeline_ops - sync object implementation ops
  * @driver_name:	name of the implementation
- * @fill_driver_data:	write implementation specific driver data to data.
- *			  should return an error if there is not enough room
- *			  as specified by size.  This information is returned
- *			  to userspace by SYNC_IOC_FENCE_INFO.
  * @timeline_value_str: fill str with the value of the sync_timeline's counter
  * @fence_value_str:	fill str with the value of the fence
  */
@@ -38,9 +34,6 @@ struct sync_timeline_ops {
 	const char *driver_name;
 
 	/* optional */
-	int (*fill_driver_data)(struct fence *fence, void *data, int size);
-
-	/* optional */
 	void (*timeline_value_str)(struct sync_timeline *timeline, char *str,
 				   int size);
 
-- 
2.5.0