This patch removes the use of urb->next in usbvideo.c and resubmits
the URB in the completion handler.
cheers
si
diff -urN -X /home/spse/dontdiff linux-2.5.20/drivers/usb/media/usbvideo.c
linux-2.5.20-usbvideo/drivers/usb/media/usbvideo.c
--- linux-2.5.20/drivers/usb/media/usbvideo.c Mon Jun 3 02:44:49 2002
+++ linux-2.5.20-usbvideo/drivers/usb/media/usbvideo.c Wed Jun 5 13:01:57 2002
@@ -1802,7 +1802,7 @@
static void usbvideo_IsocIrq(struct urb *urb)
{
- int i, len;
+ int i, ret, len;
uvd_t *uvd = urb->context;
/* We don't want to do anything if we are about to be removed! */
@@ -1844,6 +1844,11 @@
urb->iso_frame_desc[i].status = 0;
urb->iso_frame_desc[i].actual_length = 0;
}
+ urb->status = 0;
+ urb->dev = uvd->dev;
+ ret = usb_submit_urb (urb, GFP_KERNEL);
+ if(ret)
+ err("usb_submit_urb error (%d)", ret);
return;
}
@@ -1889,6 +1894,7 @@
urb->dev = dev;
urb->context = uvd;
urb->pipe = usb_rcvisocpipe(dev, uvd->video_endp);
+ urb->interval = 1;
urb->transfer_flags = USB_ISO_ASAP;
urb->transfer_buffer = uvd->sbuf[i].data;
urb->complete = usbvideo_IsocIrq;
@@ -1898,14 +1904,6 @@
urb->iso_frame_desc[j].offset = k;
urb->iso_frame_desc[j].length = uvd->iso_packet_len;
}
- }
-
- /* Link URBs into a ring so that they invoke each other infinitely */
- for (i=0; i < USBVIDEO_NUMSBUF; i++) {
- if ((i+1) < USBVIDEO_NUMSBUF)
- uvd->sbuf[i].urb->next = uvd->sbuf[i+1].urb;
- else
- uvd->sbuf[i].urb->next = uvd->sbuf[0].urb;
}
/* Submit all URBs */
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