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| /freebsd-11-stable/sys/dev/drm2/i915/ | ||
| H A D | i915_drv.c | diff 256848 Mon Oct 21 14:26:53 MDT 2013 kib Reset function on SandyBridge holds the gt_lock for the whole duration already. Also, according to the specs, GDRST register is not in the power well, so the forcewake for reset status read is excessive for this reason. Use plain register read for waiting of the reset completion notification, to avoid gt_lock recursion. Linux upstream did the similar change, but their code was already restructured. Reported by: ray Sponsored by: The FreeBSD Foundation MFC after: 1 week |
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