linux-kernel - [PATCH 07/30] staging: sw_sync: Add fill_driver

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Date:	Thu, 28 Feb 2013 16:43:03 -0800
From:	John Stultz <john.stultz@...aro.org>
To:	lkml <linux-kernel@...r.kernel.org>
Cc:	Erik Gilling <konkers@...roid.com>,
	Maarten Lankhorst <maarten.lankhorst@...onical.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Rob Clark <robclark@...il.com>,
	Sumit Semwal <sumit.semwal@...aro.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	dri-devel@...ts.freedesktop.org,
	Android Kernel Team <kernel-team@...roid.com>,
	John Stultz <john.stultz@...aro.org>
Subject: [PATCH 07/30] staging: sw_sync: Add fill_driver_data support

From: Erik Gilling <konkers@...roid.com>

Add fill_driver_data support to export fence data to ioctl

Cc: Maarten Lankhorst <maarten.lankhorst@...onical.com>
Cc: Erik Gilling <konkers@...roid.com>
Cc: Daniel Vetter <daniel.vetter@...ll.ch>
Cc: Rob Clark <robclark@...il.com>
Cc: Sumit Semwal <sumit.semwal@...aro.org>
Cc: Greg KH <gregkh@...uxfoundation.org>
Cc: dri-devel@...ts.freedesktop.org
Cc: Android Kernel Team <kernel-team@...roid.com>
Signed-off-by: Erik Gilling <konkers@...roid.com>
[jstultz: Add commit message]
Signed-off-by: John Stultz <john.stultz@...aro.org>
---
 drivers/staging/android/sw_sync.c |   14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/drivers/staging/android/sw_sync.c b/drivers/staging/android/sw_sync.c
index 64c5ebb..081e4d1 100644
--- a/drivers/staging/android/sw_sync.c
+++ b/drivers/staging/android/sw_sync.c
@@ -87,6 +87,19 @@ static void sw_sync_print_pt(struct seq_file *s, struct sync_pt *sync_pt)
 	seq_printf(s, "%d / %d", pt->value, obj->value);
 }
 
+static int sw_sync_fill_driver_data(struct sync_pt *sync_pt,
+				    void *data, int size)
+{
+	struct sw_sync_pt *pt = (struct sw_sync_pt *)sync_pt;
+
+	if (size < sizeof(pt->value))
+		return -ENOMEM;
+
+	memcpy(data, &pt->value, sizeof(pt->value));
+
+	return sizeof(pt->value);
+}
+
 struct sync_timeline_ops sw_sync_timeline_ops = {
 	.driver_name = "sw_sync",
 	.dup = sw_sync_pt_dup,
@@ -94,6 +107,7 @@ struct sync_timeline_ops sw_sync_timeline_ops = {
 	.compare = sw_sync_pt_compare,
 	.print_obj = sw_sync_print_obj,
 	.print_pt = sw_sync_print_pt,
+	.fill_driver_data = sw_sync_fill_driver_data,
 };
 
 
-- 
1.7.10.4

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