[Intel-gfx] [PATCH] uxa: Do not change DPMS mode on unconnected outputs

[Daniel Vetter]

On Fri, Sep 20, 2013 at 07:56:40AM -0300, Rodrigo Vivi wrote:
> "The operation is in theory redundant, and in the case of Haswell where
> we have multiple outputs aliasing to the same encoder, actually harmful."
> 
> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=68030
> Credits-to: Chris Wilson <chris at chris-wilson.co.uk>
> Tested-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>

Can we have a testcase for this since this very much looks like a kernel
bug, specifically in intel_connector_dpms?

I think doing a dpms off on all connectors but the one we've just enabled
in kms_flip and then trying to do a few flips to check whether the pipe is
still on should be good enough.

Thanks, Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch