From: Daniel Vetter Date: Tue, 9 Jul 2013 12:44:26 +0000 (+0200) Subject: drm/i915: clean up media reset on gm45 X-Git-Tag: v3.12-rc1~136^2~165^2~20 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=36c0cc616e518bfc2b685bed7fb3243d1242eca4;p=pandora-kernel.git drm/i915: clean up media reset on gm45 Originally I've thought that this fixes up the reset issues on my gm45, but that was just a red herring due to b0rked testing. Still I much prefer writing the right values (all other fields are reserved) instead of potentially dragging gunk around. Hence also clear the register to 0 after a reset. Note that Cspec is a bit confused and doesn't explicitly say that all the other bits in this register are "reserved, mbz" like usually. Instead they're marked as "r/o, default value = 0" which semantically amounts to the same thing. v2: Stop claiming this fixes anything and return 0 if successful instead of stack garbage. v3: Pimp the commit message to explain exactly why I think the docs allow us to ditch the rmw cycle, spurred by a discussion with Chris. Cc: Chris Wilson Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter --- Reading git-diff-tree failed