Package: zapping
Version: 0.10~cvs6-2
Severity: important
Tags: patch
*** Please type your report below this line ***
I ran into the bug which is also reported here:
https://bugs.launchpad.net/ubuntu/+source/zapping/+bug/304530
I looked at the kernel code, and it is possible that the ioctl
VIDIOC_REQBUFS can return a value greater than 0 on success.
This break's zapping's TV engine code, which assumes most ioctl's
return 0 on success.
Below is a hackish patch that got video working for me on a
Conexant card. I'm still having trouble getting channels working,
but that's a separate problem.
- Chris
diff -ru zapping-0.10~cvs6/src/tveng25.c zapping-0.10~cvs6-cdf/src/tveng25.c
--- zapping-0.10~cvs6/src/tveng25.c 2006-06-07 02:56:51.000000000 -0400
+++ zapping-0.10~cvs6-cdf/src/tveng25.c 2009-05-10 18:05:30.000000000 -0400
@@ -2575,7 +2575,7 @@
rb.memory = V4L2_MEMORY_MMAP;
rb.count = n_buffers;
- if (-1 == xioctl (info, VIDIOC_REQBUFS, &rb))
+ if (xioctl_may_fail (info, VIDIOC_REQBUFS, &rb) < 0)
return FALSE;
if (rb.count <= 0)
-- System Information:
Debian Release: 5.0.1
APT prefers stable
APT policy: (500, 'stable')
Architecture: i386 (i686)
Kernel: Linux 2.6.28.9snoopbuffuse (SMP w/2 CPU cores; PREEMPT)
Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968)
Shell: /bin/sh linked to /bin/bash
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