Hi Tharindu,
On Saturday 20 October 2007, Tharindu Rukshan Bamunuarachchi wrote:
> Am I unlucky ? :-(
Your device is definitely faulty. I'm a bit puzzled regarding how the device
could work at all without a workaround. Have you tested it with Windows ?
Does it come with its UVC driver or does it use Microsoft's supplied driver ?
Anyway, here's a patch that should fix the problem. Could you please test it ?
Best regards,
Laurent Pinchart
Index: uvc_video.c
===================================================================
--- uvc_video.c (revision 138)
+++ uvc_video.c (working copy)
@@ -21,6 +21,10 @@
#include <linux/wait.h>
#include <asm/atomic.h>
+#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,15)
+#include <media/v4l2-common.h>
+#endif
+
#include "uvcvideo.h"
/* ------------------------------------------------------------------------
@@ -774,6 +778,13 @@
/* Isochronous endpoint, select the alternate setting. */
bandwidth = video->streaming->ctrl.dwMaxPayloadTransferSize;
+ if (bandwidth == 0) {
+ uvc_printk(KERN_WARNING, "device %s requested null "
+ "bandwidth, defaulting to lowest.\n",
+ video->vdev->name);
+ bandwidth = 1;
+ }
+
for (i = 0; i < intf->num_altsetting; ++i) {
alts = &intf->altsetting[i];
ep = uvc_find_endpoint(alts,
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