From 215733fadb87709e91b3a622d786865292c9ab11 Mon Sep 17 00:00:00 2001 From: Paulo Zanoni Date: Mon, 19 Aug 2013 13:18:07 -0300 Subject: [PATCH] drm/i915: grab force_wake when restoring LCPLL If LCPLL is disabled, there's a chance we might be in package C8 state or deeper, and we'll get a hard hang when restoring LCPLL (also, a red led lights up on my motherboard). So grab the force_wake, which will get us out of RC6 and, as a consequence, out of PC8+ (since we need RC6 to get into PC8+). Note: Discussions with hw designers are still ongoing what exactly goes boom here. But I think we can go ahead and just merge this little hack for now until it's clear what we actually need. Signed-off-by: Paulo Zanoni [danvet: Add small note about the current state of the discussion around this hack.] Signed-off-by: Daniel Vetter --- Reading git-format-patch failed