drm/nvd0/disp: ignore clock set if no pclk
authorBen Skeggs <bskeggs@redhat.com>
Fri, 16 Mar 2012 05:32:16 +0000 (15:32 +1000)
committerBen Skeggs <bskeggs@redhat.com>
Thu, 22 Mar 2012 07:18:00 +0000 (17:18 +1000)
This happens somehow during init on a machine I have, and leads to a
divide-by-zero.

Lets avoid that...

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

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