Ben Widawsky 8dee3eea3c drm/i915: Never read FORCEWAKE ... The same designer from the previous patch has told us to never read FORCEWAKE. We only do this for the POSTING_READ(), so simply change that to something within the same cacheline (for no reason in particular other than it sounds nice). In the _mt case we can leverage the gtfifodbg check for the POSTING_READ. This partially reverts commit 6af2d180f8 Author: Daniel Vetter <daniel.vetter@ffwll.ch> Date: Thu Jul 26 16:24:50 2012 +0200 drm/i915: fix forcewake related hangs on snb v2: commit message, comments about posting read from (Daniel) Note: vlv forcewake doesn't need any changes for this special treatment since FORCEWAKE_VLV is in a totally different register range, and the readback FORCEWAKE_ACK_VLV readback that follows is in the same range. Signed-off-by: Ben Widawsky <ben@bwidawsk.net> Acked-by: Chris Wilson <chris@chris-wilson.co.uk> [danvet: Added note.] Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>		2012-09-03 10:28:32 +02:00
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drm	drm/i915: Never read FORCEWAKE	2012-09-03 10:28:32 +02:00
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vga	vga_switcheroo: Don't require handler init callback	2012-08-17 17:34:41 -04:00
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