vga_switcheroo: make power switch handler optional
authorDave Airlie <airlied@redhat.com>
Mon, 6 Dec 2010 02:31:50 +0000 (12:31 +1000)
committerDave Airlie <airlied@redhat.com>
Wed, 5 Jan 2011 03:43:05 +0000 (13:43 +1000)
At least on the nvidia mux the power switch seems to be executed
by the ACPI PS0/PS3 methods so need to do it explicitly.

Signed-off-by: Dave Airlie <airlied@redhat.com>

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