From: Ezequiel Garcia <elezegarcia@gmail.com>
Date: Wed, 26 Sep 2012 10:30:34 +0000 (-0300)
Subject: [media] uvc: Add return code check at vb2_queue_init()
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=5712661d643099bda44909cfd75560fcda72c387;p=openwrt%2Fstaging%2Fblogic.git

[media] uvc: Add return code check at vb2_queue_init()

This function returns an integer and it's mandatory
to check the return code.

Signed-off-by: Ezequiel Garcia <elezegarcia@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

diff --git a/drivers/media/usb/uvc/uvc_queue.c b/drivers/media/usb/uvc/uvc_queue.c
index 5577381b5bf0..18a91fae6bc1 100644
--- a/drivers/media/usb/uvc/uvc_queue.c
+++ b/drivers/media/usb/uvc/uvc_queue.c
@@ -122,21 +122,27 @@ static struct vb2_ops uvc_queue_qops = {
 	.buf_finish = uvc_buffer_finish,
 };
 
-void uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,
+int uvc_queue_init(struct uvc_video_queue *queue, enum v4l2_buf_type type,
 		    int drop_corrupted)
 {
+	int ret;
+
 	queue->queue.type = type;
 	queue->queue.io_modes = VB2_MMAP | VB2_USERPTR;
 	queue->queue.drv_priv = queue;
 	queue->queue.buf_struct_size = sizeof(struct uvc_buffer);
 	queue->queue.ops = &uvc_queue_qops;
 	queue->queue.mem_ops = &vb2_vmalloc_memops;
-	vb2_queue_init(&queue->queue);
+	ret = vb2_queue_init(&queue->queue);
+	if (ret)
+		return ret;
 
 	mutex_init(&queue->mutex);
 	spin_lock_init(&queue->irqlock);
 	INIT_LIST_HEAD(&queue->irqqueue);
 	queue->flags = drop_corrupted ? UVC_QUEUE_DROP_CORRUPTED : 0;
+
+	return 0;
 }
 
 /* -----------------------------------------------------------------------------
diff --git a/drivers/media/usb/uvc/uvc_video.c b/drivers/media/usb/uvc/uvc_video.c
index 1c15b4227bdb..57c3076a4625 100644
--- a/drivers/media/usb/uvc/uvc_video.c
+++ b/drivers/media/usb/uvc/uvc_video.c
@@ -1755,7 +1755,9 @@ int uvc_video_init(struct uvc_streaming *stream)
 	atomic_set(&stream->active, 0);
 
 	/* Initialize the video buffers queue. */
-	uvc_queue_init(&stream->queue, stream->type, !uvc_no_drop_param);
+	ret = uvc_queue_init(&stream->queue, stream->type, !uvc_no_drop_param);
+	if (ret)
+		return ret;
 
 	/* Alternate setting 0 should be the default, yet the XBox Live Vision
 	 * Cam (and possibly other devices) crash or otherwise misbehave if
diff --git a/drivers/media/usb/uvc/uvcvideo.h b/drivers/media/usb/uvc/uvcvideo.h
index 3764040475bb..af216ec45e39 100644
--- a/drivers/media/usb/uvc/uvcvideo.h
+++ b/drivers/media/usb/uvc/uvcvideo.h
@@ -600,7 +600,7 @@ extern struct uvc_driver uvc_driver;
 extern struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
 
 /* Video buffers queue management. */
-extern void uvc_queue_init(struct uvc_video_queue *queue,
+extern int uvc_queue_init(struct uvc_video_queue *queue,
 		enum v4l2_buf_type type, int drop_corrupted);
 extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
 		struct v4l2_requestbuffers *rb);