V4L2: __ucmpdi2 undefined on ppc

Stephane Marchesin marchesin at icps.u-strasbg.fr
Mon Mar 3 05:48:45 EST 2008

On 2/6/08, Stephane Marchesin <marchesin at icps.u-strasbg.fr> wrote:
>  We're hitting this i nouveau as well (http://nouveau.freedesktop.org),
>  since we make extensive use ot 64 bit ints. Over time, we've had a
>  number of reports on this issue, and at one point I read that it
>  should be fixed in gcc. But recently, a nouveau user on PPC32 (Henrik
>  in CC:) reported the issue again with gcc 4.2.3. Others have it on gcc
>  4.2.2 too:
>  http://bugs.freedesktop.org/show_bug.cgi?id=10547
>  So, the point of this email is to ask about the possibility of merging
>  in one of the __ucmpdi2 patches, like David's which is kept below for
>  reference. Most distros seem to ship with such a patch already, and it
>  seems that other drivers hit this as well.

So, could we have that thing in main tree ? It's not like it's
untested, most distros carry that, and a couple of arches provide
their own ucmpdi2 implementation already. It's also such a small


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