@@ -99,9 +99,11 @@ static int isight_decode(struct uvc_video_queue *queue, struct uvc_buffer *buf,
return 0;
}
-void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
+void uvc_video_decode_isight(struct uvc_urb *uvc_urb,
struct uvc_buffer *buf)
{
+ struct urb *urb = uvc_urb->urb;
+ struct uvc_streaming *stream = uvc_urb->stream;
int ret, i;
for (i = 0; i < urb->number_of_packets; ++i) {
@@ -1153,9 +1153,11 @@ static void uvc_video_validate_buffer(const struct uvc_streaming *stream,
/*
* Completion handler for video URBs.
*/
-static void uvc_video_decode_isoc(struct urb *urb, struct uvc_streaming *stream,
- struct uvc_buffer *buf)
+static void uvc_video_decode_isoc(struct uvc_urb *uvc_urb,
+ struct uvc_buffer *buf)
{
+ struct urb *urb = uvc_urb->urb;
+ struct uvc_streaming *stream = uvc_urb->stream;
u8 *mem;
int ret, i;
@@ -1199,9 +1201,11 @@ static void uvc_video_decode_isoc(struct urb *urb, struct uvc_streaming *stream,
}
}
-static void uvc_video_decode_bulk(struct urb *urb, struct uvc_streaming *stream,
- struct uvc_buffer *buf)
+static void uvc_video_decode_bulk(struct uvc_urb *uvc_urb,
+ struct uvc_buffer *buf)
{
+ struct urb *urb = uvc_urb->urb;
+ struct uvc_streaming *stream = uvc_urb->stream;
u8 *mem;
int len, ret;
@@ -1266,9 +1270,12 @@ static void uvc_video_decode_bulk(struct urb *urb, struct uvc_streaming *stream,
}
}
-static void uvc_video_encode_bulk(struct urb *urb, struct uvc_streaming *stream,
- struct uvc_buffer *buf)
+static void uvc_video_encode_bulk(struct uvc_urb *uvc_urb,
+ struct uvc_buffer *buf)
{
+ struct urb *urb = uvc_urb->urb;
+ struct uvc_streaming *stream = uvc_urb->stream;
+
u8 *mem = urb->transfer_buffer;
int len = stream->urb_size, ret;
@@ -1311,7 +1318,8 @@ static void uvc_video_encode_bulk(struct urb *urb, struct uvc_streaming *stream,
static void uvc_video_complete(struct urb *urb)
{
- struct uvc_streaming *stream = urb->context;
+ struct uvc_urb *uvc_urb = urb->context;
+ struct uvc_streaming *stream = uvc_urb->stream;
struct uvc_video_queue *queue = &stream->queue;
struct uvc_buffer *buf = NULL;
unsigned long flags;
@@ -1341,7 +1349,7 @@ static void uvc_video_complete(struct urb *urb)
queue);
spin_unlock_irqrestore(&queue->irqlock, flags);
- stream->decode(urb, stream, buf);
+ stream->decode(uvc_urb, buf);
if ((ret = usb_submit_urb(urb, GFP_ATOMIC)) < 0) {
uvc_printk(KERN_ERR, "Failed to resubmit video URB (%d).\n",
@@ -1419,6 +1427,8 @@ static int uvc_alloc_urb_buffers(struct uvc_streaming *stream,
uvc_free_urb_buffers(stream);
break;
}
+
+ uvc_urb->stream = stream;
}
if (i == UVC_URBS) {
@@ -1517,7 +1527,7 @@ static int uvc_init_video_isoc(struct uvc_streaming *stream,
}
urb->dev = stream->dev->udev;
- urb->context = stream;
+ urb->context = uvc_urb;
urb->pipe = usb_rcvisocpipe(stream->dev->udev,
ep->desc.bEndpointAddress);
#ifndef CONFIG_DMA_NONCOHERENT
@@ -1584,8 +1594,8 @@ static int uvc_init_video_bulk(struct uvc_streaming *stream,
return -ENOMEM;
}
- usb_fill_bulk_urb(urb, stream->dev->udev, pipe, uvc_urb->buffer,
- size, uvc_video_complete, stream);
+ usb_fill_bulk_urb(urb, stream->dev->udev, pipe, uvc_urb->buffer,
+ size, uvc_video_complete, uvc_urb);
#ifndef CONFIG_DMA_NONCOHERENT
urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
urb->transfer_dma = uvc_urb->dma;
@@ -483,11 +483,13 @@ struct uvc_stats_stream {
* struct uvc_urb - URB context management structure
*
* @urb: the URB described by this context structure
+ * @stream: UVC streaming context
* @buffer: memory storage for the URB
* @dma: DMA coherent addressing for the urb_buffer
*/
struct uvc_urb {
struct urb *urb;
+ struct uvc_streaming *stream;
char *buffer;
dma_addr_t dma;
@@ -523,8 +525,7 @@ struct uvc_streaming {
/* Buffers queue. */
unsigned int frozen : 1;
struct uvc_video_queue queue;
- void (*decode) (struct urb *urb, struct uvc_streaming *video,
- struct uvc_buffer *buf);
+ void (*decode)(struct uvc_urb *uvc_urb, struct uvc_buffer *buf);
/* Context data used by the bulk completion handler. */
struct {
@@ -780,8 +781,7 @@ extern struct usb_host_endpoint *uvc_find_endpoint(
struct usb_host_interface *alts, __u8 epaddr);
/* Quirks support */
-void uvc_video_decode_isight(struct urb *urb, struct uvc_streaming *stream,
- struct uvc_buffer *buf);
+void uvc_video_decode_isight(struct uvc_urb *uvc_urb, struct uvc_buffer *buf);
/* debugfs and statistics */
void uvc_debugfs_init(void);